Document:

<PAGE>

                          NINTH AMENDMENT TO LEASE              Exhibit (10)(ii)
                          ------------------------

     This Ninth Amendment to Lease (this "Amendment") is made as of January 31,
2000 by and between American National Bank and Trust Company of Chicago, as
Trustee under Trust Agreement dated April 5, 1990 and known as Trust No. 110513-
07 ("Landlord"), and The Northern Trust Company, an Illinois banking
corporation.

                                    Recitals
                                    --------

     A.  American National Bank and Trust Company of Chicago, as Trustee under
Trust No. 65287 ("Prior Landlord") and Tenant entered into that certain Lease
dated August 27, 1985 (the "Original Lease") as amended by that certain First
Amendment to Agreement of Lease dated August 15, 1986 (the "First Amendment"),
that certain Second Amendment to Agreement of Lease dated August 6, 1987 (the
"Second Amendment"), and that certain Third Amendment to Agreement of Lease
dated May 20, 1988 (the "Third Amendment").

     B.  The Original Lease, as amended by the First Amendment, Second Amendment
and Third Amendment, was assigned by Prior Landlord to Landlord by an assignment
dated April 6, 1990.

     C.  Landlord and Tenant further amended the Original Lease by that certain
Fourth Amendment to Agreement of Lease dated May 1, 1990, that certain Fifth
Amendment to Agreement of Lease dated January 12, 1995, that certain Sixth
Amendment to Agreement of Lease dated November 30, 1995 and, certain Seventh
Amendment dated February 24, 1998 (the "Seventh Amendment") and that certain
Eighth Amendment to Lease dated as of January 31, 2000 (the "Eighth Amendment").
The Original Lease, as amended by all of the aforedescribed amendments, is
hereinafter referred to as the "Lease."  All capitalized terms used in this
Amendment and not otherwise defined shall have the meanings ascribed to them in
the Lease.

     D.  Pursuant to the Lease (including the Eighth Amendment), Tenant now
leases from Landlord approximately 262,492 rentable square feet, (subject to the
terms of the Seventh Amendment), in the building located at 181 West Madison
Street, Chicago, Illinois.

     E.  Tenant has requested to lease from Landlord, and Landlord has agreed to
lease to Tenant, additional space in the Building on a short-term basis and the
parties wish to confirm their agreements regarding such leasing in this
Amendment.

     NOW, THEREFORE, in consideration of the foregoing and the mutual covenants
contained herein, and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, Landlord and Tenant agree as
follows:

     1.  36th Floor Space.  Effective as of June 1, 2000 and continuing to and
including December 31, 2000 (such period, the "36th Floor Space Term") the
Premises shall be expanded to include that certain space on the 36th floor of
the Building, containing approximately 20,866 rentable square feet and depicted
on Exhibit A attached hereto and incorporated herein by this reference (the
"36th Floor Space").  Notwithstanding anything to the contrary contained herein,
<PAGE>

but subject to the conditions and requirements set forth in Paragraph 4 below,
Tenant shall have the right to enter the Premises and to begin to improve the
36th Floor Space for Tenant's purposes from and after the date on which this
Amendment is fully executed, in which event all of the provisions of the
Original Lease applicable to occupancy of premises shall apply and be in full
force and effect as to the 36th Floor Space, other than, the obligation to pay
Rent, which shall commence on June 1, 2000.

     2.  36th Floor Space Base Rent.  Tenant shall pay Base Rent in
consideration for the leasing of the 36th Floor Space for the 36th Floor Space
Term, at the annual rate of $10.00 per square foot, in monthly installments of
Seventeen Thousand Three Hundred Eighty-Eight and 33/100 Dollars ($17,388.33).
Base Rent shall be paid promptly on the first day of each and every calendar
month during the 36th Floor Space Term.

     3.  Rent Adjustments - Operating Expenses.  During the 36th  Floor Space
Term and with respect to the 36th Floor Space, Tenant shall separately pay
Tenant's Proportionate Share of Operating Expenses and Operating Expense
Deposits as described in Paragraph 5 of the Original Lease with respect to the
36th Floor Space.  Tenant's Proportionate Share with respect to the 36th Floor
Space shall be 2.2716%.  No Rent Adjustment (as described in Paragraph 5.B)
shall be payable with respect to the leasing of the 36th Floor Space.

     4.  Condition of Space and Tenant Improvements.  Landlord shall deliver
possession of the 36th Floor Space to Tenant on or before March 10, 2000.
Tenant agrees to accept the 36th  Floor Space in its "as is" condition as of the
date of this Amendment and agrees that Landlord has made no promise,
representation or agreement regarding any improvements, alterations or
renovations of the 36th Floor Space.  Tenant shall be permitted to construct
leasehold improvements to such space, in accordance with the following
provisions:

     (a) Tenant shall, at Tenant's sole cost and expense cause, to be prepared
     and submitted to the Landlord for Landlord's prior approval, at such time
     as Tenant desires, plans and specifications (the "Tenant's Plans"),
     including, but not limited to, all space plans, working drawings,
     mechanical and engineering drawings disclosing all construction to be
     performed to build out the 36th Floor Space.  Landlord agrees to review and
     either approve or disapprove (and noting with such disapproval the specific
     items not approved) Tenant's Plans within five (5) business days of
     Landlord's receipt of a complete set of Tenant's Plans.  In the event
     Tenant's Plans are disapproved, Tenant shall revise and resubmit Tenant's
     Plans expeditiously and Landlord shall review the same and notify the
     Tenant of its approval or disapproval within three (3) business days
     thereafter in the same manner as required for the initial submittal.
     Landlord's approval shall not be unseasonably withheld or delayed.
     Landlord's authorized representative ("Landlord's Representative") for the
     purpose of Tenant's deliveries or to communications to Landlord shall be
     Andrew Bartucci or such other person as is designated by Landlord in
     writing.  Tenant shall not commence any work in the 36th  Floor Space until
     Tenant's Plans have been approved.

     (b) Tenant is hereby granted the right to utilize contractors of Tenant's
     own choice to construct improvements to the 36th Floor Space, subject to
     Landlord's approval
<PAGE>

     as to the qualifications of such contractor which shall not be unreasonably
     withheld. Landlord hereby approves Valenti, or Bulley Andrews. The
     contractor chosen by Tenant is hereinafter referred to as "Tenant's
     Contractor". All installations, alterations and additions shall be
     constructed in a good and workmanlike manner and only new and good grades
     of material shall be used. Such work performed by Tenant's Contractor shall
     comply with the Americans With Disabilities Act, and with all insurance
     requirements and all other ordinances and regulations of the City of
     Chicago or any department or agency thereof and with the requirements of
     all statutes and regulations of the State of Illinois or any department or
     agency thereof. Tenant shall permit Landlord's Representative (and an
     architect or engineer designated by Landlord) to observe all construction
     operations within the 36th Floor Space performed by Tenant's Contractor,
     provided that no supervision fee shall be charged by Landlord. Such
     observation by persons on behalf of Landlord shall be solely and only for
     the benefit of Landlord. Tenant shall pay to the Landlord the cost of any
     materials purchased from Landlord at Landlord's actual invoice cost for
     said items. Tenant shall not be charged for hoisting. No silence or
     statement by any person acting on behalf of Landlord shall be deemed or
     construed as an assumption by said persons or Landlord of any
     responsibility for or in relation to the construction of the 36th Floor
     Space or any guarantee that the work completed within the 36th Floor Space
     complies with legal requirements, complies with Tenant's Plans, or is
     suitable or acceptable to the Tenant for Tenant's intended business
     purposes. Tenant shall furnish to Landlord, prior to commencement of any
     work in the 36th Floor Space, building permits (or such other documentation
     as is required by the City of Chicago to commence such work) and
     certificates of appropriate insurance. Upon completion of any
     installations, alterations or additions, Tenant shall furnish Landlord with
     building permits (to the extent not previously required and furnished), and
     with contractor's affidavits and full and final waivers of lien covering
     all labor and material expended and used in constructing the 36th Floor
     Space. Tenant shall hold Landlord harmless and indemnify Landlord from all
     claims and costs, damages, liens and expenses which may arise out of or are
     connected in any way with said construction by Tenant's Contractor.

     (c) The cost of all work (the "Work") necessary to build out all of the
     36th Floor Space (including, but not limited to, all labor, material,
     permits and working drawings and design costs) shall be the responsibility
     of Tenant.

     (d) Landlord reserves the right from time to time, but not more often than
     monthly, to require Tenant to furnish partial or final lien waivers (as
     applicable) and sworn contractors' statements and all other reasonable
     information Landlord may request, in writing, so as to enable Landlord to
     determine the status of (i) the preparation or modification of Tenant's
     Plans; (ii) all contracts let or to be let in relation to the Work; (iii)
     the cost of all Work, including the cost of any extras or modifications
     requested by Tenant after Landlord's approval of Tenant's Plans; (iv) the
     status of completion of the Work; (v) the status of payment to all
     contractors, subcontractors and materialmen in relation to the Work; (vi)
     the status of Tenant's obligations to obtain partial and final lien
     waivers, as the situation may require, from all contractors, subcontractors
     and materialmen in relation to the Work; and (vii) the status of any
     adverse claims or disputes
<PAGE>

     with contractors, subcontractors or materialmen in relation to the Work.
     Tenant shall furnish such information as Landlord may reasonably require to
     evidence the foregoing no later than fifteen (15) days subsequent to the
     date the Landlord requests the same, in writing.

     (e) The 36th Floor Space shall, upon expiration of the 36th Floor Space
     Term, be left by Tenant in its then "as is" condition, broom clean and,
     notwithstanding anything to the contrary contained in the Lease, Landlord
     shall have no right to require Tenant to remove any of the improvements
     made to the 36th Floor Expansion Space.

     5.  Brokers.  Tenant represents that, except for Douglas Elliman-Beitler
and Staubach Midwest, LLC, it has not dealt with any real estate brokers in
connection with this Ninth Amendment and, to its knowledge, no broker other than
Douglas Elliman-Beitler and Staubach Midwest, LLC, initiated or participated in
the negotiation of this Ninth Amendment, or submitted or showed the 36th Floor
Space or any other space in the Building to Tenant.  Notwithstanding the
foregoing, no party is entitled to a commission or fee with respect to the
leasing of the 36th Floor Space or the negotiation of this Ninth Amendment.
Tenant hereby agrees to indemnify, defend, and hold Landlord harmless from and
against any and all claims of Staubach Midwest, LLC, or any other party claiming
to have represented Tenant, for broker commission or fees in connection with
this Ninth Amendment.

     Landlord represents that, except for Douglas Elliman-Beitler and Staubach
Midwest, LLC, it has not deal with any real estate brokers in connection with
this Ninth Amendment and, to its knowledge, no broker other than Douglas
Elliman-Beitler and Staubach Midwest, LLC, initiated or participated in the
negotiation of this Ninth Amendment or submitted or showed the 36th Floor Space
or any other space in the Building, on behalf of Landlord, to Tenant.
Notwithstanding the foregoing, no party is entitled to a commission or fee with
respect to the leasing of the 36th Floor Space or the negotiation of this Ninth
Amendment.  Landlord hereby agrees to indemnify, defend, and hold Tenant
harmless from and against any and all claims of Douglas Elliman-Beitler, or any
other party claiming to have represented Landlord, for broker commissions or
fees in connection with this Ninth Amendment.

     6.  Merger.  All negotiations, considerations, representations and
understandings between Landlord and Tenant relating to this Ninth Amendment are
incorporated herein and may be modified or altered only by agreement, in
writing, between Landlord and Tenant.  No modification, termination, or
surrender of the Lease, as modified by this Ninth Amendment, or surrender of the
Premises (including the 36th Floor Space) or any part thereof or of any interest
therein by Tenant shall be valid or effective unless agreed to and accepted, in
writing, by Landlord an no act by any representative or agent of Landlord other
than delivery of such a written agreement and acceptance by Landlord shall
constitute agreement to and acceptance thereof.  Any prior negotiations or
intentions of the parties relating to this Ninth Amendment, whether oral or
evidenced by written documentation dated prior to the date of this Ninth
Amendment, are null and void, unless specifically incorporated herein by
reference.

     7.  Exoneration Clause.  This Ninth Amendment is executed by the
undersigned, American National Bank and Trust Company of Chicago, not
personally, but as Trustee in the
<PAGE>

exercise of the power and authority conferred upon and vested in it as such
Trustee and under the express direction of the beneficiaries of the said Trust.
It is expressly understood and agreed that all of the warranties, indemnities,
representations, covenants, undertaking sand agreements herein made on the part
of the Trustee are undertaken by it solely in its capacity as Trustee and not
personally. No personal liability or personal responsibility is assumed by or
shall at any time be asserted or enforceable against the Trustee on account of
any warranty, indemnity, representation, covenant, undertaking or agreement of
the Trustee in this instrument.

     IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
executed as of the day and year first above written.

<TABLE>
<S>                                           <C>
LANDLORD:                                     AMERICAN NATIONAL BANK AND TRUST COMPANY OF
                                              CHICAGO, not individually, but solely as Trustee
                                              under Trust Agreement dated April 5, 1990 and
                                              known as Trust No. 110513-07

                                              By:  /s/ Mark DaGrazia
                                                 --------------------------------
                                              Title:  Trust Officer
                                                    -----------------------------

                                              Attest:  Attestation not required by American
                                              National Bank and Trust Company of Chicago Bylaws

                                                                       ______________ Secretary

TENANT:                                       THE NORTHERN TRUST COMPANY

                                              By:  /s/ Wayne LaChance
                                                 --------------------------------
                                              Title:  Vice President
                                                    -----------------------------

</TABLE>
<PAGE>

                                   EXHIBIT A

                               36th  FLOOR SPACE<PAGE>

                      TENTH AMENDMENT TO LEASE            Exhibit (10)(iii)
                      ------------------------            -----------------

     This Tenth Amendment to Lease (this "Amendment") is made as of February 1,
2000 by and between American National Bank and Trust Company of Chicago, as
Trustee under Trust Agreement dated April 5, 1990 and known as Trust No.
110513-07 ("Landlord"), and The Northern Trust Company, an Illinois banking
corporation.

                                    Recitals
                                    --------

     A.   American National Bank and Trust Company of Chicago, as Trustee under
Trust No. 65287 ("Prior Landlord") and Tenant entered into that certain Lease
dated August 27, 1985 (the "Original Lease") as amended by that certain First
Amendment to Agreement of Lease dated August 15, 1986 (the "First Amendment"),
that certain Second Amendment to Agreement of Lease dated August 6, 1987 (the
"Second Amendment"), and that certain Third Amendment to Agreement of Lease
dated May 20, 1988 (the "Third Amendment").

     B.   The Original Lease, as amended by the First Amendment, Second
Amendment and Third Amendment, was assigned by Prior Landlord to Landlord by an
assignment dated April 6, 1990.

     C.   Landlord and Tenant further amended the Original Lease by that certain
Fourth Amendment to Agreement of Lease dated May 1, 1990, that certain Fifth
Amendment to Agreement of Lease dated January 12, 1995, that certain Sixth
Amendment to Agreement of Lease dated November 30, 1995, that certain Seventh
Amendment dated February 24, 1998 (the "Seventh Amendment"), that certain Eighth
Amendment to Lease dated as of January 31, 2000 (the "Eighth Amendment") and
that certain Ninth Amendment to Lease dated as of January 31, 2000 (the "Ninth
Amendment"). The Original Lease, as amended by all of the aforedescribed
amendments, is hereinafter referred to as the "Lease." All capitalized terms
used in this Amendment and not otherwise defined shall have the meanings
ascribed to them in the Lease.

     D.   Pursuant to the Lease (including the Eighth Amendment, but not the
"36th Floor Space" demised pursuant to the Ninth Amendment), Tenant now leases
from Landlord approximately 262,492 rentable square feet, (subject to the terms
of the Seventh Amendment), in the building located at 181 West Madison Street,
Chicago, Illinois, including, without limitation, that certain space on the
fifteenth (15th) floor of the Building, containing approximately 8,245 rentable
square feet, known as Suite 1550 and depicted on Exhibit A attached hereto and
incorporated herein by this reference ("Suite 1550"). The term of the Lease as
to Suite 1550 (the "Suite 1550 Term") is scheduled to expire on March 14, 2001.

     E.   Landlord and Tenant have agreed to extend the Suite 1550 Term and wish
to confirm their agreements regarding such extension in this Amendment.
<PAGE>

     NOW, THEREFORE, in consideration of the foregoing and the mutual covenants
contained herein, and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, Landlord and Tenant agree as
follows:

     1.   Suite 1550 Extension. The Suite 1550 Term is hereby extended to and
including March 14, 2005.

     2.   Suite 1550. Tenant shall pay Base Rent in consideration for the
leasing of Suite 1550 for the Suite 1550 Term, in accordance with the following
schedule:

<TABLE>
<CAPTION>
              Period                Annual Base     Annual Base    Monthly Base
                                      Rent Per          Rent           Rent
                                    Square Foot
<S>                                 <C>                <C>               <C>
March 15, 2001 to March 14, 2002       $18.25       $150,471.25     $12,539.27
March 15, 2002 to March 14, 2003       $18.80       $155,006.00     $12,917.17
March 15, 2003 to March 14, 2004       $19.36       $159,623.20     $13,301.93
March 15, 2004 to March 14, 2005       $19.94       $164,405.30     $13,700.44
</TABLE>

Base Rent shall be paid promptly on the first day of each and every calendar
month during the Suite 1550 Term.

     3.   Rent Adjustments - Operating Expenses. During the Suite 1550 Term and
with respect to Suite 1550, Tenant shall pay Tenant's Proportionate Share of
Operating Expenses and Operating Expense Deposits as described in Paragraph 5 of
the Original Lease. Tenant's Proportionate Share as to the entire Premises
(excluding the "36th Floor Space" demised pursuant to the Ninth Amendment) shall
be 28.5766% as of March 15, 2001. No Rent Adjustment (as described in Paragraph
5.B) shall be payable with respect to the leasing of Suite 1550.

     4.   Condition of Space and Tenant Improvements. Tenant agrees to accept
Suite 1550 in its "as is" condition as of March 15, 2001 and agrees that
Landlord has made no promise, representation or agreement regarding any
improvements, alterations or renovations of Suite 1550.

     5.   Brokers. Tenant represents that, except for Douglas Elliman-Beitler
and Staubach Midwest, LLC, it has not dealt with any real estate brokers in
connection with this Tenth Amendment and, to its knowledge, no broker other than
Douglas Elliman-Beitler and Staubach Midwest, LLC, initiated or participated in
the negotiation of this Tenth Amendment, submitted or showed Suite 1550 or any
other space in the Building to Tenant or is entitled to any commission or fee in
connection with this Tenth Amendment. Tenant hereby agrees to indemnify, defend,
and hold Landlord harmless from and against any and all claims of any other
party for broker commission or fees in connection with this Tenth Amendment who
claim to have dealt with the Tenant.
<PAGE>

     Landlord represents that, except for Douglas Elliman-Beitler and Staubach
Midwest, LLC, it has not deal with any real estate brokers in connection with
this Tenth Amendment and, to its knowledge, no broker other than Douglas
Elliman-Beitler and Staubach Midwest, LLC, initiated or participated in the
negotiation of this Tenth Amendment, submitted or showed Suite 1550 or any other
space in the Building, on behalf of Landlord, to Tenant or is entitled to any
commission or fee in connection with this Tenth Amendment. Landlord hereby
agrees to indemnify, defend, and hold Tenant harmless from and against any and
all claims of Douglas Elliman-Beitler and Staubach Midwest, LLC and any other
party for broker commissions or fees in connection with this Tenth Amendment who
claim to have dealt with the Landlord.

     6.   Renewal Option. Landlord hereby grants to Tenant the option to extend
the Suite 1550 Term on the same terms, conditions and provisions as contained in
this Amendment, except as otherwise provided herein, for one period of five (5)
years (such period being referred to as the "Option Period"), which option may
be exercised by Tenant independently of any other options provided for in the
Lease and notwithstanding that the Lease may terminate with respect to other
portions of the Building currently leased by Tenant. Tenant's Proportionate
Share as to Suite 1550 alone, is 0.8976%.

          (a)  Tenant's option to extend shall be exercisable by written notice
     from Tenant to Landlord given no later than twelve (12) months prior to the
     expiration of the Suite 1550 Term, time being of the essence. If the option
     is not so exercised, such option shall thereupon expire.

          (b)  Monthly Base Rent per square foot of rentable area payable during
     the Option Period shall be equal to 95% of the market rate, as determined
     the same manner as is prescribed in Section 33.D of the Original Lease.

          (c)  Tenant may only exercise this option to extend, and an exercise
     thereof shall only be effective, if at the time of Tenant's exercise and on
     the Option Period commencement date, the Lease is in full force and effect
     and Tenant is not in material default under the Lease (after expiration of
     any applicable notice and cure period). In addition to the condition set
     forth in the first sentence of this subparagraph (c), if Tenant is in
     material default under the Lease (after expiration of any applicable notice
     and cure period) within thirty (30) days prior to the Option Period
     commencement date, and has not cured or is not in the process of diligently
     curing such default prior to said commencement date, then, at Landlord's
     option, Tenant's right to exercise its option may be terminated and
     rendered null and void by notice thereof from Landlord to Tenant. No
     sublessee or assignee shall be entitled to exercise this option to renew
     the Suite 1550 Term, except under the following circumstances: (i) a
     successor by merger or other consolidation with Tenant or an acquirer of
     substantially all of the assets of Tenant may exercise this option to
     renew, and (ii) a sublessee of the entire Suite 1550 space for the
     remainder of the Suite 1550 Term, or an assignee of the Lease (as to Suite
     1550) which has been approved by Landlord, may exercise this option to
     renew if and only if (A) Landlord agreed, at the time of granting its
     consent to the assignment, that such assignee would have the right to
     exercise this option, and (B) Tenant agreed, at the time of its assignment,
     to remain fully liable under the Lease (as to Suite 1550 ) through the
     Option
<PAGE>

     Period. Notwithstanding anything to the contrary contained herein, the
     terms and conditions of this Paragraph 6(c) shall only apply if Tenant
     renews the Lease as to Suite 1550 pursuant to this renewal option. If
     Tenant renews the Lease as to the 20th Floor Expansion Space pursuant to
     Section 33 of the Original Lease (as amended by the Second Amendment), this
     Paragraph 6(c) shall not apply to such renewal.

          (d)  Upon the valid exercise by Tenant of its option to extend, at the
     request of either party hereto, Landlord and Tenant shall enter into a
     written supplement to the Lease confirming the terms, conditions and
     provisions applicable to the Option Period as determined in accordance with
     the provisions of this Section, with such revisions to the Base Rent
     provisions of this Lease as may be necessary to conform those provisions to
     the rental rate applicable to the Option Period. No new options to extend
     shall be deemed to be created by a valid exercise of this extension option
     and no other provisions inapplicable to the Option Period such as, but not
     limited to, an obligation to construct or pay for construction of
     improvements or to grant rent abatements, shall be construed to govern the
     Option Period.

     7.   Merger. All negotiations, considerations, representations and
understandings between Landlord and Tenant relating to this Tenth Amendment are
incorporated herein and may be modified or altered only by agreement, in
writing, between Landlord and Tenant. No modification, termination, or surrender
of the Lease, as modified by this Tenth Amendment, or surrender of the Premises
(including Suite 1550) or any part thereof or of any interest therein by Tenant
shall be valid or effective unless agreed to and accepted, in writing, by
Landlord an no act by any representative or agent of Landlord other than
delivery of such a written agreement and acceptance by Landlord shall constitute
agreement to and acceptance thereof. Any prior negotiations or intentions of the
parties relating to this Tenth Amendment, whether oral or evidenced by written
documentation dated prior to the date of this Tenth Amendment, are null and
void, unless specifically incorporated herein by reference.

     8.   Exoneration Clause. This Tenth Amendment is executed by the
undersigned, American National Bank and Trust Company of Chicago, not
personally, but as Trustee in the exercise of the power and authority conferred
upon and vested in it as such Trustee and under the express direction of the
beneficiaries of the said Trust. It is expressly understood and agreed that all
of the warranties, indemnities, representations, covenants, undertaking sand
agreements herein made on the part of the Trustee are undertaken by it solely in
its capacity as Trustee and not personally. No personal liability or personal
responsibility is assumed by or shall at any time be asserted or enforceable
against the Trustee on account of any warranty, indemnity, representation,
covenant, undertaking or agreement of the Trustee in this instrument.

     IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
executed as of the day and year first above written.
<PAGE>

LANDLORD:                         AMERICAN NATIONAL BANK AND TRUST COMPANY OF
                                  CHICAGO, not individually, but solely as
                                  Trustee under Trust Agreement dated April 5,
                                  1990 and known as Trust No. 110513-07

                                  By:  /s/Mark DaGrazia
                                     ----------------------------
                                  Title:  Trust Officer
                                        -------------------------

                                  Attest: Attestation not required by American
                                  National Bank and Trust Company of Chicago
                                  Bylaws

                                                        ______________ Secretary

TENANT:                           THE NORTHERN TRUST COMPANY

                                  By:  /s/Wayne LaChance
                                     ----------------------------
                                  Title:  Vice President
                                        -------------------------

<PAGE>

                                  EXHIBIT A
                                  ---------

                                  SUITE 1550
                                  ----------

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00009-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00009-of-00352.parquet"}]]