Document:

<PAGE>

                                                                   Exhibit 10.24

                    [LOGO] Murdock Communications Corporation

                         PO Box 412 Marion IA 52302-0412

January 27, 2003

Mr. Dave Kirkpatrick
346 Piney Point
Houston TX 77024
FAX: 713-953-9166

RE: Conversion of Service Fees to Equity

Dear Dave:

This letter memorializes your oral agreement to convert any unpaid compensation
for your services to the Company into Company common stock at the effective time
of the proposed merger with Polar Molecular Corporation.

For all services rendered on or prior to July 31, 2002, all unpaid amounts shall
be converted into the number of shares of Company common stock as determined by
dividing the amount due for such services by $3.03, rounding up any fractional
shares to the nearest whole share. The amount which would be converted through
July 31, 2002, is $17,000.00 which will convert to 5,611 shares of Company
common stock.

For all services rendered after July 31, 2002, all unpaid amounts shall be
converted into the number of shares of Company common stock as determined by
dividing the amount due for such services by $1.00, rounding up any fractional
shares to the nearest whole share. For purposes of illustration only, should the
merger become effective on March 31, 2003, you would be due approximately $8,000
for post-July 31, 2002, services. This would result in a conversion of the
amount due you into 8,000 shares of Company common stock.

Please acknowledge below, that you are in complete agreement with the terms of
this letter, and return an executed copy to me.

Sincerely,

Nancy Davis
Staff Accountant

<PAGE>

                                 ACKNOWLEDGEMENT

I, Dave Kirkpartrick, a Director of Murdock Communications Corporation,
acknowledge that I understand and agree to the terms of the attached letter.

----------------
Dave Kirkpatrick<PAGE>

                                                                   Exhibit 10.25

                    [LOGO] Murdock Communications Corporation

                         PO Box 412 Marion IA 52302-0412

January 27, 2003

Mr. Wayne Wright
119 Kaylene Place
Tauranga R.D. 2
New Zealand
FAX: 800-241-7419

RE:  Conversion of Service Fees to Equity

Dear Wayne:

This letter memorializes your oral agreement to convert any unpaid compensation
for your services to the Company into Company common stock at the effective time
of the proposed merger with Polar Molecular Corporation.

For all services rendered on or prior to July 31, 2002, all unpaid amounts shall
be converted into the number of shares of Company common stock as determined by
dividing the amount due for such services by $3.03, rounding up any fractional
shares to the nearest whole share. The amount which would be converted through
July 31, 2002, is $28,000.00 which will convert to 9,241 shares of Company
common stock.

For all services rendered after July 31, 2002, all unpaid amounts shall be
converted into the number of shares of Company common stock as determined by
dividing the amount due for such services by $1.00, rounding up any fractional
shares to the nearest whole share. For purposes of illustration only, should the
merger become effective on March 31, 2003, you would be due approximately
$32,000 for post-July 31, 2002, services. This would result in a conversion of
the amount due you into 32,000 shares of Company common stock.

Please acknowledge below, that you are in complete agreement with the terms of
this letter, and return an executed copy to me.

Sincerely,

Nancy Davis
Staff Accountant

<PAGE>

                                 ACKNOWLEDGEMENT

I, Wayne Wright, Principal Interim Accounting Officer of Murdock Communications
Corporation, acknowledge that I understand and agree to the terms of the
attached letter.

---------------
Wayne Wright<PAGE>

                                                                   Exhibit 10.26

                      [Berthel Fisher & Company Letterhead]

                                                                 January 9, 2003

Mr. Gene Davis, CEO
Murdock Communications Corporation

Dear Gene:

     Pursuant to discussions in preparation of the filing of the S-4 for the
merger of Murdock Communications Corporation ("MCC") and Polar Molecular
Corporation ("Polar"), Berthel Fisher & Company Financial Services, Inc.
("BFCFS") has been requested to specify an amount for which BFCFS and Berthel
Fisher & Company Management Corp. would settle all outstanding investment
banking fees, success fees, office rental payments, expenses and other amounts
due from MCC.

     Therefore, we make the following offer to settle all such amounts that may
be outstanding as of the closing of the MCC/Polar merger or due in conjunction
with the MCC/Polar merger.

          .    750,000 shares of MCC common stock, issuable immediately prior to
               the merger;
                                     - and -
          .    Pursuant to our previous understanding, BFCFS is to receive up to
               $90,000 in cash for these fees, expenses, etc. from MCC loans
               from Polar with respect to funds raised in the Polar Additional
               Offering. With respect to this, BFCFS will take MCC common shares
               valued at $1/share for any cash shortfall related to this
               $90,000, issuable immediately prior to the merger.

     Gene, the current accrual of fees, expenses, etc. on MCC's books are
roughly $510,000 + with, obviously, additions being accrued each month. We
believe this would be the best way to handle for both parties.

     If this is agreeable to MCC, please acknowledge below and return a copy of
this letter to my attention. If you have any questions, please contact me.

                                              Sincerely,

                                              /s/ Ronald O. Brendengen

                                              Ronald O. Brendengen
                                              Chief Financial Officer

cc:  Wayne Wright
     Nancy Davis

     Acknowledged and agreed this 23 day of January, 2003

MURDOCK COMMUNICATIONS CORPORATION

BY: /s/ Gene Davis
    -------------------------
    Gene Davis, CEO<PAGE>

                                                                   Exhibit 10.27

                                                                 January 3, 2003

Mr. Gene Davis
Ms. Nancy Davis
Murdock Communications Corporation

Dear Gene and Nancy:

     MCC Investment Company ("MCCIC") has been requested to document the
conversion proposal for all of MCCIC's outstanding debt to Murdock
Communications Corporation ("MCC") to finalize for the S-4 filing for the
MCC/Polar merger.

     MCCIC would agree to the following:

AMOUNT OF
PRINCIPAL & INTEREST
DUE MCCIC AT 12/31/02   CONVERT TO:
---------------------   ----------

       $526,669         263,334 common shares of MCC
                           ($2/share conversion rate)

        203,634         203,634 common shares of MCC
                           ($1/share conversion rate)
       --------
       $730,303         Total P&I due at 12/31/02
       ========

Total number of MCC common shares through 12/31/02 = 466,968 (263,334 + 203,634)

     Any additions to the amount due (interest accrual and any additional
principal advances) to MCCIC subsequent to 12/31/02 will be converted to MCC
common shares at $1/share.

     There have been numerous prior agreements/discussions and acceptance by MCC
of this proposal voids all previous agreements and will be final for inclusion
in the S-4 document.

     Please indicate your agreement by signing below and returning a copy to me.
Please contact me with any questions.

                                                Sincerely,

                                                MCC INVESTMENT COMPANY

                                                /s/  Ronald O. Brendengen
                                                Ronald O. Brendengen, President

     Acknowledged and agreed this 23 day of January, 2003

MURDOCK COMMUNICATIONS CORPORATION

By: /s/ Gene Davis
    -------------------------------
    Gene Davis, CEO<PAGE>

                                                                   Exhibit 10.28

                     MUTUAL SETTLEMENT AGREEMENT AND RELEASE

     This Mutual Settlement Agreement and Release ("Settlement Agreement") is
entered into between John S. Rance, Steven E. Rance, Robert M. Upshaw, and
Fernando Ficachi (referred to hereinafter as the "Rance Group") and Berthel
Fisher & Company, Thomas J. Berthel, Ronald O. Brendengen, Eugene I. Davis,
Thomas E. Chaplin, Guy O. Murdock, Steven J. Ehlert, Murdock Communications
Corporation ("MCC") and any and all of MCC's current and former directors,
officers, agents, employees, (referred to hereinafter as the "Murdock Group").
The Rance Group and Murdock Group may be referred to herein individually as the
"Party" or collectively as the "Parties".

     WHEREAS, all of the Rance Group except Ficachi filed a complaint against
the Murdock Group in United States District Court, Southern District of Iowa,
File No. 4-01 CV 90030 (Consolidated), asserting multiple claims including
violation of: (1) federal and state securities and corporate laws; (2) violation
of the Securities Act of 1933; (3) fraud; (4) negligence; (5) negligent
misrepresentation; (6) tortious interference with a contract or business
advantage; and (7) fraud for concealment of material fact; and any other claims
set out in the third-party complaint which is hereby incorporated by reference
(the "Third-Party Complaint"); and

     WHEREAS, John S. Rance contends that he either possesses or did possess
four (4) MCC promissory notes (hereinafter, the term "Notes" shall mean for
purposes of this Settlement Agreement, each and every MCC promissory note issued
to and/or in the possession of John S. Rance, Steven E. Rance, Robert M. Upshaw,
Fernando Ficachi, and shall include, but not be limited to, all of the notes
listed in Exhibit "D"

<PAGE>

hereto), executed by Thomas E. Chaplin on behalf of MCC under which he has filed
or may file various causes of action against the Murdock Group, which Notes he
contends have face values of $500,000, $300,000, $200,000 and $350,000; and

     WHEREAS, Steven E. Rance contends that he either possesses or did possess
four (4) Notes executed by Thomas E. Chaplin on behalf of MCC under which he has
filed or may file various causes of action against the Murdock Group, which
Notes he contends have face values of $500,000, $300,000, $200,000 and $350,000;
and

     WHEREAS, Robert M. Upshaw contends that he either possesses or did possess
three (3) Notes executed by Thomas E. Chaplin on behalf of MCC under which he
has filed or may file various causes of action against the Murdock Group, which
Notes he contends have face values of $300,000, $200,000 and $350,000; and

     WHEREAS, Fernando Ficachi contends that he either possesses or did possess
a Note executed by Thomas E. Chaplin on behalf of MCC under which he may file
various causes of action against the Murdock Group, which Note he contends has a
face value of $500,000; and

     WHEREAS, each member of the Murdock Group has filed Motions to Dismiss on
certain of the claims which are currently pending before the Court; and

     WHEREAS, the Parties deny that any of their conduct was improper or illegal
in any way and further deny that the other Party is entitled to any damages
under any legal theory and/or relating to the conduct of any person or entity
associated with the other Party; and

     WHEREAS, on December 19, 2001, MCC entered into an Agreement and Plan of
Merger, as amended (the "Merger Agreement") with Polar Molecular Corporation

                                       2

<PAGE>

("Polar") providing for the Merger of a wholly-owned subsidiary of MCC with and
into Polar (the "Merger"); and

     WHEREAS, under the terms of the Merger, the Merger must become effective
("Effective Time") before the expiration date set forth in the Merger Agreement,
unless otherwise amended by the Parties thereto (the "Expiration Date"); and

     WHEREAS, after performing independent due diligence the Murdock Group
believes that the consummation of the Merger will provide it with an economic
benefit; and

     WHEREAS, after performing independent due diligence, the Rance Group
believes that the consummation of the Merger will provide it with an economic
benefit; and

     WHEREAS, each of the Parties has separately and independently performed its
own due diligence, and both the Murdock Group and the Rance Group believe that
the pending and/or potential litigation will be detrimental to the consummation
of the Merger, including but not limited to, any potential claims by Ficachi;
claims related to certain MCC Notes now in the possession of the Federal Deposit
Insurance Corporation's ("FDIC") successors; and claims related to certain MCC
Notes which exist and are not in the possession of the FDIC's successors; and

     WHEREAS, the Parties desire to settle and compromise any and all claims
they have or may have against each other amicably, including but not limited to,
those disputes related to any actual claims and/or any potential claims related
to the Notes or transactions connected with the Notes; and

                                       3

<PAGE>

     WHEREAS, there may be additional Notes executed by various members of the
Murdock Group, in the possession of the FDIC or other institutions or
individuals and each Party recognizes that any claims it may have against any
other Party hereto with respect to any such outstanding Notes will also be
extinguished by this settlement; and

     WHEREAS, the boards of directors of the corporate entities being released
herein have authorized, by resolution, the approval of the Merger and this
Settlement Agreement; and

     WHEREAS, all Parties wish to avoid protracted and expensive litigation and
wish to allow the Merger to consummate and believe that this settlement provides
sufficient and valuable consideration to all Parties;

     NOW, THEREFORE, in consideration of the mutual promises and agreements
herein contained and for other good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, the Parties agree to settle any and
all differences between them as follows:

         1. Consideration. As consideration for the Rance Group's agreement to
enter into this Settlement Agreement, the Murdock Group (through MCC) will
provide to the Rance Group FIVE HUNDRED SEVENTEEN THOUSAND (517,000) shares of
common stock of MCC, no par value per share (the "MCC Common Stock"), which
shares shall be distributed to the Rance Group on a pro-rata basis as set forth
in Exhibit "A" hereto (the "Rance Group's Consideration"). Notwithstanding the
prior sentence, in the event that the Murdock Group provides to the Parties
listed on Exhibit "B" hereto more than 250,000 shares as settlement and release
of any pending or actual claims by those persons on Exhibit "B", then for each
additional share in excess of 250,000

                                       4

<PAGE>

shares, two (2) additional shares of the MCC Common Stock shall be distributed
to, on a pro-rata basis, the Rance Group listed on Exhibit "A" hereto. The
Parties agree that each of them and all of them collectively receive an economic
benefit by virtue of this settlement. At or prior to the Closing of the Merger,
and in accordance with the Offering Memorandum attached hereto as Exhibit "C"
and each member of the Rance Group's subscription therefor, MCC shall deliver to
the Escrow Agent pursuant to and as defined in Exhibit "6" of the Offering
Memorandum, Five Hundred Seventeen Thousand (517,000) authorized shares of MCC
Common Stock. The Parties agree that: (a) the MCC Common Stock shall be offered
and issued to the Rance Group under the private offering exemptions from
registration available under the Securities Act and the laws of the States in
which the Shares will be sold, and that the Shares offered pursuant to Exhibit
"C" hereto will not, prior to issuance, be registered under the Securities Act
or under the securities laws of any state or other jurisdiction. As a result,
the Shares as initially issued cannot be transferred without registration under
the Securities Act and applicable state securities laws or an exemption
therefrom, and the Shares will be "restricted securities" as that term is
defined in Rule 144 under the Securities Act; and (b) MCC shall register with
the Securities and Exchange Commission the resale by the Rance Group of the
shares prior to the closing of the Merger, (at MCC's sole expense, which
registration may also include any other securities to be sold by MCC, and
successor of MCC or any other security holder of MCC or any successor of MCC),
and the registration shall cause the shares to be freely tradable by the Rance
Group at or prior to the closing of the Merger; and (c) that none of the
attorneys, including but not limited to ARENSON & ZIMMERMANN, P.L.C.,

                                       5

<PAGE>

BRIGGS AND MORGAN, SIMMONS, PERRINE, ALBRIGHT & ELLWOOD, P.L.C., AND FIEGEN LAW
FIRM, P.C., that represent any of the Murdock Group entities (as defined in this
Agreement) (i) have been involved in the offer and sale of securities, (ii)
conducted due diligence on, (iii) passed upon the facts or legality of, (iv) or
rendering an opinion upon the Offering Memorandum, (v) or are recommending or
endorsing the Offering Memorandum to the Rance Group. The Rance Group's decision
to invest in the offering made pursuant to the Offering Memorandum is based
solely upon their respective independent review and consideration of their
individual investment objectives, risk tolerances, financial conditions and
liquidity needs. The attorneys representing the various entities comprising the
Murdock Group have not advised the members of the Rance Group and will not
advise the members of the Rance Group as to the nature, potential, value or
suitability of the securities offered through the Offering Memorandum or an
investment in any security issued by MCC, and the Rance Group acknowledges that
it has not relied upon any representations of the attorneys in evaluating or
accepting any offer to purchase securities, and understands that none of the
attorneys are rendering any opinions as to the propriety of the disclosures in
the Offering Memorandum and its exhibits. By executing the Settlement Agreement,
the members of the Rance Group acknowledge and agree to be bound by this
disclosure.

     2. Payment of the Rance Group's Consideration. At the time this Settlement
Agreement is executed by all of the Parties hereto, the Murdock Group shall
deposit with the Escrow Agent, pursuant to the Escrow Agreement in Exhibit "6"
of the Offering Memorandum, the Rance Group's Consideration set forth in
Paragraph 1, above. At the Effective Time, the Escrow Agent shall make a
distribution of the Rance Group's

                                       6

<PAGE>

Consideration to the Rance Group, or its designee, pursuant to the schedule set
forth in Exhibit "A" hereto. The Murdock Group shall distribute no shares to
those persons listed on Exhibit "B" hereto until the Effective Time.

     3. Tax Treatment. The Rance Group acknowledge that the Murdock Group have
made no representations or warranties whatsoever concerning the treatment for
tax purposes of any of the Rance Group's Consideration provided pursuant to this
Settlement Agreement, that they have not relied upon any such representations or
warranties, and that the terms of this Settlement Agreement are not intended to
guarantee any particular tax treatment with regard to any of the Rance Group's
Consideration provided pursuant to this Settlement Agreement.

     4. Mutual Release of Claims ("Release"). Upon fulfillment of the
obligations of each of the Rance Group and Murdock Group as set forth in this
Settlement Agreement, the Parties are hereby: (a) each by the other released,
acquitted, and forever discharged, together with their respective parent
companies, subsidiaries, affiliates, officers, directors, employees, agents,
servants, all persons and entities in privy with them, or any of them, their
heirs, assigns and predecessors or successors in interest; and (b) the Parties
covenant not to institute, prosecute, or in any way aid in the institution or
prosecution of any and all claims, complaints, causes of action or demands of
whatever kind which they now have, had in the past, at common law, statutory law
or otherwise, against each other arising out of or from any actions, conduct,
decisions, behavior or events occurring up to or on the date of their signatures
on this Settlement Agreement, including but not limited to, those claims set
forth in the action against the Murdock Group in United States District Court,
Southern District of Iowa, File No. 4-01

                                       7

<PAGE>

CV 90030 (Consolidated), and including but not limited to any claims related to
the Notes, irrespective of whether the Notes are reflected on the books of MCC.
BY THIS RELEASE, THE PARTIES GIVE UP ANY RIGHT TO MAKE OR CONTINUE TO PURSUE ANY
CLAIM, BRING OR MAINTAIN A LAWSUIT, FILE ANY ADMINISTRATIVE CLAIM, OR OTHERWISE
SEEK MONEY DAMAGES, EQUITABLE RELIEF, OR COURT ORDERS AGAINST THE OTHER PARTY
FOR ANY KNOWN OR UNKNOWN CLAIMS ACCRUED PRIOR TO THE EXECUTION OF THIS
SETTLEMENT AGREEMENT.

     5. Dissolution of Settlement Agreement on Failure of Merger.
Notwithstanding anything to the contrary in this Settlement Agreement, or in any
of the terms of this Settlement Agreement, the Parties hereto agree that if the
Merger does not become effective pursuant to the terms of the Merger Agreement,
then this Settlement Agreement shall dissolve and terminate, and each and every
one of the Parties to this Settlement Agreement shall be released from any and
all of that party's obligations and duties hereunder.

     6. Stay of Litigation. The Parties hereto shall take all necessary steps to
stay the litigation related to the Third-Party Complaint pending in the United
States District Court, Southern District of Iowa, File No. 4-01 CV 90030
(Consolidated) pending consummation of the Merger, except that the Murdock Group
shall not be required to agree to the extension of any statutes of limitations
except for that period of time during which the action was stayed by Court
Order. Notwithstanding the prior sentence, all statutes of limitation defenses
of the Murdock Group which are pending before the Court in the Murdock Group's
Motion to Dismiss at the time this Settlement Agreement is executed shall be
preserved.

                                       8

<PAGE>

     7. Dismissal with Prejudice. The Parties will, contemporaneously with the
execution of this Settlement Agreement, execute a stipulated Dismissal with
Prejudice the Third-Party Complaint, which shall be held in escrow by the Escrow
Agent until the Closing of the Merger. Upon Closing of the Merger, the Escrow
Agent shall file the stipulated Motion to Dismiss with Prejudice in the form
attached hereto as Exhibit "E". The stipulation will be filed and submitted to
the Court for approval within three (3) days after the consummation of the
Merger. It is understood by all Parties hereto that the Court's dismissal of the
Third-Party Complaint may be a condition precedent to the viability of the
Merger. The Parties hereby stipulate that each will be responsible for its/his
own costs and attorneys fees.

     8. No Admission of Liability. Nothing contained in this agreement or in the
discussions preparatory to this agreement shall be construed to constitute any
admission of liability on the part of the Parties, and this document, in whole
or in part, shall not be offered or referred to in any claim or action by any
Party against any of the other Parties for any purpose whatsoever under Federal
Rule of Evidence 408 and analogous state rules.

     9. No Third-Party Benefit/Representation and Warranty. Nothing in this
Settlement Agreement shall be deemed to create any right or obligation in any
person not a Party hereto and this Settlement Agreement shall not be construed
otherwise in any respect to be a contract or agreement, in whole or in part, for
the benefit of or binding upon any person not a party hereto. Each Party to this
Agreement represents and warrants that no other person or entity has any
interest in the cause of action involved in this Settlement Agreement and it has
not assigned, sold, transferred, or

                                       9

<PAGE>

otherwise disposed of any of the claims or causes of action referred to in this
Settlement Agreement.

     10. Voluntary Agreement. The Parties have read this Settlement Agreement
and understand its terms. The Parties also acknowledge that they have signed
this Settlement Agreement voluntarily, that they have had the opportunity to
consult with legal counsel and that the Parties have had the advice of such
counsel.

     11. Entire Agreement. The Parties intend that the terms of this Settlement
Agreement shall be the final expression of their agreement with respect to the
subject matter hereof and represents the culmination of all discussions and
communications between and amongst the Parties and may not be contradicted by
evidence of any prior or contemporaneous agreement. No modification or amendment
to this Settlement Agreement shall be valid or binding unless contained in a
written instrument and signed by all of the Parties hereto.

     12. Severability. If any provision of this Settlement Agreement, or the
application thereof to any person, place, or circumstance, shall be held by a
court of competent jurisdiction to be invalid, unenforceable, or void, the
remainder of this Settlement Agreement and such provisions as applied to other
persons, places, and circumstances shall remain in full force and effect.

     13. Counterparts. This Settlement Agreement may be executed in two or more
counterparts, each one of which shall be an original and all of which together
shall constitute one and the same instrument.

     14. Governing Law. This Settlement Agreement shall be interpreted according
to the laws of the State of Iowa in the United States of America, and the
Parties agree

                                       10

<PAGE>

that exclusive jurisdiction and venue shall be in the federal or state courts
situated in Linn County, Iowa. Any action brought after entry of the Order of
Dismissal with respect to the Settlement Agreement or the Order of Dismissal,
including an action to set aside the Order of Dismissal shall be brought
pursuant to Fed. R. Civ. P. 60(b).

     15. Assigns and Successors. Notwithstanding the provisions in Paragraph 9,
this Settlement Agreement shall be binding upon the Parties hereto and their
subsidiaries, affiliates, officers, directors, employees, agents, assigns,
insurers, and predecessors or successors in interest of any sort.

     16. Construction of Settlement Agreement. The Parties hereto agree and
stipulate that this Settlement Agreement is a product of, and has been drafted
by, all of the attorneys for the Parties. The rule of construction which
provides that where there is ambiguity the agreement shall be construed against
the drafting party shall specifically not apply to this agreement.

     17. Headings. The section and paragraph headings appearing in this
agreement are inserted for the purpose of convenience and ready reference. They
do not purport to define, limit, or extend the scope or intent of the language
of the sections and paragraphs to which they pertain.

                            [Signature Page Follows]

BY SIGNING BELOW EACH OF THE PARTIES HAS INDICATED THEIR AGREEMENT TO THIS
MUTUAL SETTLEMENT AGREEMENT AND RELEASE.

                                       11

<PAGE>

     IN WITNESS WHEREOF, the Parties have executed this Settlement Agreement as
of the day and year set forth below.

                       THE MURDOCK GROUP AND ITS ATTORNEYS

/s/ Wayne Wright                                    Date                 , 2002
------------------------------------                    -----------------
For Murdock Communications Corporation
By its Principal Accounting Officer, Wayne Wright
c/o ARENSON & ZIMMERMANN, PLC
101 Second Street, SE
Suite 904
Cedar Rapids, IA  52401

/s/ Eugene I. Davis                                 Date                 , 2002
------------------------------------                    -----------------
Eugene I. Davis, an Individual
Five Canoe Brook Drive
Livingston, NJ 07039
PH: C/O: 319-363-8199

AS TO FORM AND CONTENT:

/s/ James H. Arenson                                Date                 , 2002
------------------------------------                    -----------------
James H. Arenson, Esq.
ARENSON & ZIMMERMANN, P.L.C.
101 Second Street, SE
Suite 904
Cedar Rapids, IA 52401
PH: 319-363-8199
ATTORNEY FOR MURDOCK COMMUNICATIONS CORPORATION AND EUGENE I. DAVIS.
AS TO FORM AND CONTENT:

/s/ Richard H. Zimmermann                           Date                 , 2002
------------------------------------                    -----------------

                                       12

<PAGE>

Richard H. Zimmermann, Esq.
ARENSON & ZIMMERMANN, P.L.C.
101 Second Street, SE
Suite 904
Cedar Rapids, IA 52401
PH: 319-363-8199
ATTORNEY FOR MURDOCK COMMUNICATIONS CORPORATION AND EUGENE I. DAVIS.

/s/ Thomas J. Berthel                               Date                 , 2002
------------------------------------                    -----------------
For Berthel Fisher & Company
By its President, Thomas J. Berthel
701 Tama Street, Building B
P. O. Box 609
Marion, IA 52302-0609
PH: 319-447-5700

/s/ Ronald O. Brendengen                            Date                 , 2002
------------------------------------                    -----------------
Ronald O. Brendengen, an Individual
c/o 701 Tama Street, Building B
P. O. Box 609
Marion, IA 52302-0609
PH: 319-447-5700

/s/ Thomas J. Berthel                               Date                 , 2002
------------------------------------                    -----------------
Thomas J. Berthel, an Individual
c/o 701 Tama Street, Building B
P. O. Box 609
Marion, IA 52302-0609
PH: 319-447-5700

                                       13

<PAGE>

AS TO FORM AND CONTENT:

/s/ Stephen J. Holtman                              Date                 , 2002
------------------------------------                    -----------------
Stephen J. Holtman, Esq.
SIMMONS, PERRINE, ALBRIGHT & ELLWOOD, P.L.C.
115 Third Street, SE
Suite 1200
Cedar Rapids, IA 52401-1266
PH: 319-366-7641
ATTORNEY FOR BERTHEL FISHER & COMPANY/THOMAS J. BERTHEL/RONALD O. BRENDENGEN.

AS TO FORM AND CONTENT:

/s/ Leonard T. Strand                               Date                 , 2002
------------------------------------                    -----------------
Leonard T. Strand, Esq.
SIMMONS, PERRINE, ALBRIGHT & ELLWOOD, P.L.C.
115 Third Street, SE
Suite 1200
Cedar Rapids, IA 52401-1266
PH: 319-366-7641
ATTORNEY FOR BERTHEL FISHER & COMPANY/THOMAS J. BERTHEL/RONALD O. BRENDENGEN.

/s/ Steven R. Ehlert                                Date                 , 2002
------------------------------------                    -----------------
Steven R. Ehlert, an Individual
c/o FIEGEN LAW FIRM, P.C.
316 Eighth Avenue, SE
P. O. Box 2849
Cedar Rapids, IA 52406-2849
PH: C/O: 319-362-6063

                                       14

<PAGE>

AS TO FORM AND CONTENT:

/s/ Thomas L. Feigen                                Date                 , 2002
------------------------------------                    -----------------
Thomas L. Fiegen, Esq.
FIEGEN LAW FIRM, P.C.
316 Eighth Avenue, SE
P. O. Box 2849
Cedar Rapids, IA 52406-2849
PH: 319-362-6063
ATTORNEY FOR STEVEN R. EHLERT.

/s/ Guy O. Murdock                                  Date                 , 2002
------------------------------------                    -----------------
Guy O. Murdock, an Individual
1824 Ellis Blvd. NW
Cedar Rapids, IA  52405
PH:  319-721-0519

AS TO FORM AND CONTENT:

/s/ Frank Taylor                                    Date                , 2002
------------------------------------                    -----------------
Frank Taylor, Esq.
Patrick Williams, Esq.
BRIGGS & MORGAN
2400 IDS Center
80 South 8th Street
Minneapolis, MN 55402
PH: 612-334-8445
ATTORNEYS FOR GUY O. MURDOCK.

/s/ Thomas E. Chaplin                               Date                 , 2002
------------------------------------                    -----------------
Thomas E. Chaplin, an Individual
6100 Frost Place
Laurel, MD 20707
PH: 240-456-4374

                                       15

<PAGE>

                        THE RANCE GROUP AND ITS ATTORNEYS

/s/ John S. Rance                                   Date                 , 2002
------------------------------------                    -----------------
John S. Rance, an Individual
16931 Roundhill Drive
Huntington Beach, CA 92649
PH: 714-942-8781

/s/ Steven E. Rance                                 Date                 , 2002
------------------------------------                    -----------------
Steven E. Rance, an Individual
12004 SW Sylvania Ct.
Portland, OR 97219
PH: 503-245-5203

/s/ Robert M. Upshaw                                Date                 , 2002
------------------------------------                    -----------------
Robert M. Upshaw, an Individual
2127 Glasgow
Cardiff By The Sea, CA 92007
PH:  760-942-8781

AS TO FORM AND CONTENT:

/s/ David Stroud                                    Date                 , 2002
------------------------------------                    -----------------
David Stroud, Esq.
1920 Main Street, Suite 210
Irvine, CA 92614-7223
PH: 949-955-3283
ATTORNEY FOR RANCE GROUP- JOHN RANCE, STEVEN E. RANCE, AND ROBERT M. UPSHAW.

/s/ Fernando Ficachi                                Date                 , 2002
------------------------------------                    -----------------
Fernando Ficachi, an Individual
Isla Dorada
#8 Isla Brujas, Cancun, Mexico, CP 77500.
PH: 011-52-98-83-5554

                                       16

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