Document:

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                                                      EXHIBIT 10.90

                                  June 25, 2003

                  Bank of America, N.A, as
                  Bank of America Facility Agent
                  The Hearst Tower
                  214 N. Tryon Street
                  NCI -027-19-01
                  Charlotte, NC 28255
                  Attn:  Bank of America Securities, LLC,
                         Global Structured Finance; Portfolio Management

                  Ladies and Gentlemen:

                         Pursuant to Section 2.03 of the Warehouse Note Purchase
                  and Security Agreement, dated as of May 1, 2003 (the
                  "Warehouse Note Purchase and Security Agreement"), among
                  Nelnet Education Loan Funding, Inc. (the "Borrower"), Wells
                  Fargo Bank Minnesota, National Association, as trustee, Wells
                  Fargo Bank Minnesota, National Association, as eligible lender
                  trustee, YC SUSI Trust, as a conduit lender, Bank of America,
                  N.A, as a facility agent and an alternate lender, Gemini
                  Securitization Corp., as a conduit lender, Deutsche Bank AG,
                  New York Branch, as a facility agent and an alternate lender,
                  Barton Capital Corporation, as a conduit lender, Societe
                  Generate, as a facility agent and an alternate lender, and
                  Bank of America, N.A., as administrative agent, the Borrower
                  hereby request that the Bank of America Facility Group
                  increase its Commitment under the Warehouse Note Purchase and
                  Security Agreement from $250,000,000 to $350,000,000 effective
                  on June 26,2003. Please acknowledge your acceptance, as the
                  Bank of America Facility Agent on behalf of the Bank of
                  America Facility Group, of this increase in the Commitment of
                  Bank of America, N.A., as Alternate Lender, for the Bank of
                  America Facility Group by executing and returning this letter
                  to us. Your execution of this letter shall constitute the
                  written evidence that the Bank of America Facility Group has
                  agreed to increase its Commitment pursuant to Section 2.03 of
                  the Warehouse Note Purchase and Security Agreement.

                         On the effective date of such increase, being June 26,
                  2003, the Borrower will provide Bank of America, N.A., as the
                  Bank of America Facility Agent, with a replacement Senior Note
                  in the maximum principal amount of $332,500,000 and a
                  replacement Subordinate Note in the maximum principal amount
                  of $17,500,000 in exchange for the existing Senior Note and
                  Subordinate Note issued to the Bank of America Facility Group.

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                           Capitalized terms used in this letter and not defined
                  herein shall have the meanings assigned to such terms in the
                  Warehouse Note Purchase and Security Agreement.

                                    Very truly yours,

                                    NELNET EDUCATION LOAN FUNDING,
                                    INC.

                                    By /s/ Terry Heimes
                                       ----------------------------
                                    Title: President

                  ACCEPTED AND AGREED TO:

                  BANK OF AMERICA, N.A.,
                  as Bank of America Facility Agent

                  By /s/ [ILLEGIBLE]
                     --------------------------------------
                  Title: Vice President

                  cc:     Wells Fargo Bank Minnesota, National Association
                          6th and Marquette Avenue
                          Minneapolis, Minnesota 55479-0069
                          Attn: Corporate Trust Department<PAGE>

                                                                   EXHIBIT 10.91
                                  June 25, 2003

                  Deutsche Bank AG. New York Branch
                  60 Wall Street, 19th Floor
                  New York, NY 10005

                  Ladies and Gentlemen:

                           Pursuant to Section 2.03 of the Warehouse Note
                  Purchase and Security Agreement, dated as of May 1, 2003 (the
                  "Warehouse Note Purchase and Security Agreement"), among
                  Nelnet Education Loan Funding, Inc. (the "Borrower"), Wells
                  Fargo Bank Minnesota, National Association, as trustee, Wells
                  Fargo Bank Minnesota, National Association, as eligible
                  lender trustee, YC SUSI Trust, as a conduit lender, Bank of
                  America, N.A., as a facility agent and an alternate lender,
                  Gemini Securitization Corp., as a conduit lender, Deutsche
                  Bank AG, New York Branch, as a facility agent and an alternate
                  lender, Barton Capital Corporation, as a conduit lender,
                  Societe Generale, as a facility agent and an alternate lender,
                  and Bank of America, N.A., as administrative agent, the
                  Borrower hereby request that the Deutsche Bank Facility Group
                  increase its Commitment under the Warehouse Note Purchase and
                  Security Agreement from $250,000,000 to $350,000,000 effective
                  on June 26, 2003. Please acknowledge your acceptance, as the
                  Deutsche Bank Facility Agent on behalf of the Deutsche Bank
                  Facility Group, of this increase in the Commitment of Deutsche
                  Bank AG, New York Branch, as Alternate Lender, for the
                  Deutsche Bank Facility Group by executing and returning this
                  letter to us. Your execution of this letter shall constitute
                  the written evidence that the Deutsche Bank Facility Group
                  has agreed to increase its Commitment pursuant to Section
                  2.03 of the Warehouse Note Purchase and Security Agreement.

                           On the effective date of such increase, being June
                  26, 2003, the Borrower will provide Deutsche Bank AG, New York
                  Branch, as the Deutsche Bank Facility Agent, with a
                  replacement Senior Note in the maximum principal amount of
                  $332,500,000 and a replacement Subordinate Note in the maximum
                  principal amount of $17,500,000 in exchange for the existing
                  Senior Note and Subordinate Note issued to the Deutsche Bank
                  Facility Group.

<PAGE>

                           Capitalized terms used in this letter and not defined
                  herein shall have the meanings assigned to such terms in the
                  Warehouse Note Purchase and Security Agreement.

                                    Very truly yours,

                                    NELNET EDUCATION LOAN FUNDING,
                                    INC.

                                    By: /s/ Terry Heimes
                                        --------------------------------
                                    Title: President

                  ACCEPTED AND AGREED TO:

                  DEUTSCHE BANK AG, NEW YORK BRANCH,
                  as Deutsche Bank Facility Agent.

                  By /s/ STANLEY CHAD
                     -----------------------------------
                  Title: VICE PRESIDENT

                  By /s/ DAVID MCCOLLUM
                     -----------------------------------
                  Title: MANAGING DIRECTOR

                  cc:      Wells Fargo Bank Minnesota, National Association
                           6th and Marquette Avenue
                           Minneapolis, Minnesota 55479-0069
                           Attn: Corporate Trust Department<PAGE>

                                                                   EXHIBIT 10.92

                               [NELNET LETTERHEAD]

                                 June 25, 2003

                  Societe Generale
                  181 West Madison Street
                  Suite 3400
                  Chicago, IL 60602
                  Attn: Securitization

                  Ladies and Gentlemen:

                           Pursuant to Section 2.03 of the Warehouse Note
                  Purchase and Security Agreement, dated as of May 1,2003 (the
                  "Warehouse Note Purchase and Security Agreement"), among
                  Nelnet Education Loan Funding Inc. (the "Borrower"}, Wells
                  Fargo Bank Minnesota, National Association, as trustee, Wells
                  Fargo Bank Minnesota, National Association, as eligible lender
                  trustee, YC SUSI Trust, as a conduit lender, Bank of America,
                  N.A., as a facility agent and an alternate lender, Gemini
                  Securitization Corp., as a conduit lender, Deutsche Bank AG,
                  New York Branch, as a facility agent and an alternate lender,
                  Barron Capital Corporation, as a conduit leader, Societe
                  Generale, as a facility agent and an alternate lender, and
                  Bank of America, N.A., as administrative agent, the Borrower
                  hereby request that the Societe Generale Facility Group
                  increase its Commitment under the Warehouse Note Purchase and
                  Security Agreement from $250,000,000 to $350,000,000 effective
                  on July 21, 2003. Please acknowledge your acceptance, as the
                  Societe Generale Facility Agent on behalf of the Societe
                  Generale Facility Group, of this increase in the Commitment of
                  Societe Generale, as Alternate Lender, for the Societe
                  Generale Facility Group by executing and returning this letter
                  to us. Your execution of this letter shall constitute the
                  written ovidence that the Societe Generale Facility Group has
                  agreed to increase its Commitment pursuant to Section 2.03 of
                  the Warehouse Note Purchase and Security Agreement.

                           On the effective date of suck increase, being July
                  21, 2003, the Borrower will provide Societe Generale, as the
                  Societe Generale Facility Agent, with a replacement Senior
                  Note in the maximum principal amount of $332,500,000 and a
                  replacement Subordinate Note in the maximum principal amount
                  of $17,500,000 in exchange for the existing Senior Note and
                  Subordinate Note issued to the Societe Generale Facility
                  Group.

<PAGE>

[NELNET LOGO]

                           Capitalized terms used in this letter and not defined
                  herein shall have the meanings assigned to such terms in the
                  Warehouse Note Purchase and Security Agreement.

                                    Very truly yours,

                                    NELNET EDUCATION LOAN FUNDING,
                                    INC.

                                    By  /s/ Terry Heimes
                                       ----------------------------
                                    Title: President

                  ACCEPTED AND AGREED TO:

                  SOCIETE GENERALE,
                  as Societe Generale Facility Agent

                  By  /s/ Paul Schmieder
                     ----------------------------------------
                  Title: Director

                  cc:      Wells Fargo Bank Minnesota, National Association.
                           6th and Marquette Avenue
                           Minneapolis, Minnesota 55479-0069
                           Attn: Corporate Trust Department

                           Societe Generale
                           1221 Avenue of the Americas
                           New York, NY 10020
                           Attn: Paul Schmieder

                                       6

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