Document:

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                                                                    EXHIBIT 4.39

                               Barnett Banks, Inc.
                             NB Holdings Corporation
                             NationsBank Corporation

                   6.90% Subordinated Notes due September 2005

                          FIRST SUPPLEMENTAL INDENTURE

                           Dated as of January 9, 1998

                       Supplementing the Indenture, dated
                          as of March 16, 1995, between
                             Barnett Banks, Inc. and
                            Chemical Bank, as Trustee

                            The Chase Manhattan Bank
                       (formerly known as Chemical Bank),
                                     Trustee

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         FIRST SUPPLEMENTAL INDENTURE, dated as of January 9, 1998 (the "First
Supplemental Indenture"), among NationsBank Corporation, a North Carolina
corporation ("NationsBank"), NB Holdings Corporation, a Delaware corporation
("Holdings"), Barnett Banks, Inc., a Florida corporation ("Barnett"), and The
Chase Manhattan Bank (formerly known as Chemical Bank), as Trustee (the
"Trustee") under the Indenture referred to herein;

         WHEREAS, Barnett and the Trustee heretofore executed and delivered an
Indenture, dated as of March 16, 1995 (the "Indenture"); and

         WHEREAS, pursuant to the Indenture Barnett issued and the Trustee
authenticated and delivered $150 million aggregate principal amount of Barnett's
6.90% Subordinated Notes Due September 2005 (the "Securities"); and

         WHEREAS, NationsBank, Holdings and Barnett have entered into the
Agreement and Plan of Merger, dated as of August 29, 1997, and amended as of
November 18, 1997, pursuant to which Barnett will merge with and into Holdings
(the "Barnett Merger") on the date hereof; and

         WHEREAS, Section 1001 of the Indenture provides that in the case of the
Barnett Merger, Holdings shall expressly assume by supplemental indenture all
the obligations under the Securities and the Indenture; and

         WHEREAS, NationsBank, as the holder of 100% of the outstanding capital
stock of Holdings, desires to assume, jointly and severally with Holdings, all
of the rights and obligations under the Securities and Indenture that are
required to be assumed by Holdings pursuant to Section 1001 of the Indenture;
and

         WHEREAS, Section 1101 of the Indenture provides that Barnett and the
Trustee may amend the Indenture and the Securities without notice to or consent
of any Holders of the Securities in order to comply with Article Ten of the
Indenture; and

         WHEREAS, this First Supplemental Indenture has been duly authorized by
all necessary corporate action on the part of each of NationsBank, Holdings and
Barnett.

                                       -2-

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         NOW, THEREFORE, NationsBank, Holdings, Barnett and the Trustee agree as
follows for the equal and ratable benefit of the Holders of the Securities:

                                    ARTICLE I
                       ASSUMPTION BY SUCCESSOR CORPORATION
                              AND ITS PARENT ENTITY

         SECTION 1.1. Assumption of the Securities. NationsBank hereby expressly
assumes, jointly and severally with Holdings, the due and punctual payment of
the principal of (and premium, if any) and interest on the Securities and the
performance of every covenant of the Indenture on the part of Barnett to be
performed or observed.

         SECTION 1.2. Trustee's Acceptance.  The Trustee hereby accepts this
First Supplemental Indenture and agrees to perform the same under the terms and
conditions set forth in the Indenture.

                                   ARTICLE II
                                  MISCELLANEOUS

         SECTION 2.1. Effect of Supplemental Indenture. Upon the later to occur
of (i) the execution and delivery of this First Supplemental Indenture by
NationsBank, Holdings, Barnett and the Trustee and (ii) the consummation of the
Barnett Merger, the Indenture shall be supplemented in accordance herewith, and
this First Supplemental Indenture shall form a part of the Indenture for all
purposes, and every Holder of Securities heretofore or hereafter authenticated
and delivered under the Indenture shall be bound thereby.

         SECTION 2.2. Indenture Remains in Full Force and Effect. Except as
supplemented hereby, all provisions in the Indenture shall remain in full force
and effect.

         SECTION 2.3. Indenture and Supplemental Indenture Construed Together.
This First Supplemental Indenture is an indenture supplemental to and in
implementation of the Indenture, and the Indenture and this First Supplemental
Indenture shall henceforth be read and construed together.

         SECTION 2.4. Confirmation and Preservation of Indenture. The Indenture
as supplemented by this First Supplemental Indenture is in all respect confirmed
and preserved.

         SECTION 2.5. Conflict with Trust Indenture Act. If any provision of
this First Supplemental Indenture limits, qualifies or conflicts with any

                                       -3-

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provision of the Trust Indenture Act ("TIA") that is required under the TIA to
be part of and govern any provision of this First Supplemental Indenture, the
provision of the TIA shall control. If any provision of this First Supplemental
Indenture modifies or excludes any provision of the TIA that may be so modified
or excluded, the provision of the TIA shall be deemed to apply to the Indenture
as so modified or to be excluded by this First Supplemental Indenture, as the
case may be.

         SECTION 2.6.  Severability. In case any provision in this First
Supplemental Indenture shall be invalid, illegal or unenforceable, the validity,
legality and enforceability of the remaining provisions shall not in any way be
affected or impaired thereby.

         SECTION 2.7.  Terms Defined in the Indenture. All capitalized terms not
otherwise defined herein shall have the meanings ascribed to them in the
Indenture.

         SECTION 2.8.  Headings. The Article and Section headings of this First
Supplemental Indenture have been inserted for convenience of reference only, are
not to be considered part of this Supplemental Indenture and shall in no way
modify or restrict any of the terms or provisions hereof.

         SECTION 2.9.  Benefits of First Supplemental Indenture, etc. Nothing in
this First Supplemental Indenture or the Securities, express or implied, shall
give to any Person, other than the parties hereto and thereto and their
successors hereunder and thereunder and the Holders of the Securities, any
benefit of any legal or equitable right, remedy or claim under the Indenture,
this First Supplemental Indenture or the Securities.

         SECTION 2.10. Successors. All agreements of Holdings and NationsBank in
this First Supplemental Indenture shall bind their successors. All agreements of
the Trustee in this First Supplemental Indenture shall bind its successors.

         SECTION 2.11. Trustee Not Responsible for Recitals. The recitals
contained herein shall be taken as the statements of Barnett, NationsBank and
Holdings, and the Trustee assumes no responsibility for their correctness. The
Trustee makes no representations as to, and shall not be responsible for, the
validity or sufficiency of this First Supplemental Indenture.

         SECTION 2.12. Certain Duties and Responsibilities of the Trustees. In
entering into this First Supplemental Indenture, the Trustee shall be entitled
to the benefit of every provision of the Indenture relating to

                                       -4-

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the conduct or affecting the liability or affording protection to the Trustee,
whether or not elsewhere herein so provided.

         SECTION 2.13. Governing Law. This First Supplemental Indenture shall be
governed by, and construed in accordance with, the laws of the State of New York
but without giving effect to applicable principles of conflicts of law to the
extent that the application of the laws of another jurisdiction would be
required thereby.

         SECTION 2.14. Counterpart Originals. The parties may sign any number
of copies of this First Supplemental Indenture. Each signed copy shall be an
original, but all of them together represent the same agreement.

                                       -5-

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         IN WITNESS WHEREOF, the parties have caused this First Supplemental
Indenture to be duly executed as of the date first written above.

                       NationsBank Corporation

                       By: /s/ JOHN E. MACK
                          -----------------
                              Name:
                              Title:

                       NB Holdings Corporation

                       By: /s/ JOHN E. MACK
                          -----------------
                              Name:
                              Title:

                       Barnett Banks, Inc.

                       By: /s/ CHARLES E. RICE
                          --------------------
                              Name: Charles E. Rice
                              Title: Chairman and Chief Executive Officer

                       The Chase Manhattan Bank, as
                       Trustee

                       By: /s/ G. MCFARLANE
                          -----------------
                              Name: G. McFarlane
                              Title: Vice President

                                        6<PAGE>

                                                                   EXHIBIT 4.43

                               Barnett Banks, Inc.
                             NB Holdings Corporation
                             NationsBank Corporation

                    9.875% Subordinated Notes, due June 2001
        10.875% Series A, Subordinated Medium-Term Notes, due March 2003
                    8.5% Subordinated Notes, due January 2007
          9.83% Series B, Subordinated Medium-Term Notes, due May 2003

                          THIRD SUPPLEMENTAL INDENTURE

                           Dated as of January 9, 1998

                       Supplementing the Indenture, dated
                         as of October 19, 1990, between
                             Barnett Banks, Inc. and
                   Morgan Guaranty Trust Company of New York,
                                   as Trustee

                 First Trust of New York, National Association,
           as successor to Morgan Guaranty Trust Company of New York,
                                     Trustee

<PAGE>

     THIRD SUPPLEMENTAL INDENTURE, dated as of January 9, 1998 (the
"Supplemental Indenture"), among NationsBank Corporation, a North Carolina
corporation ("NationsBank"), NB Holdings Corporation, a Delaware corporation
("Holdings"), Barnett Banks, Inc., a Florida corporation ("Barnett"), and First
Trust of New York, National Association, successor to Morgan Guaranty Trust
Company of New York, as Trustee (the "Trustee") under the Indenture referred to
herein;

     WHEREAS, Barnett and the Trustee heretofore executed and delivered an
Indenture, dated as of October 19, 1990 (the "Indenture"); and

     WHEREAS, pursuant to the Indenture Barnett issued and the Trustee
authenticated and delivered (i) the $100 million aggregate principal amount of
Barnett's 9.875% Subordinated Notes, due June 2001; (ii) the $55 million
aggregate principal amount of Barnett's 10.875% Series A, Subordinated
Medium-Term Notes, due March 2003; (iii) the $100 million aggregate principal
amount of Barnett's 8.5% Subordinated Notes, due January 2007, and (iv) the
$500,000 aggregate principal amount of Barnett's 9.83% Series B, Subordinated
Medium-Term Notes, due May 2003 (the "Securities"); and

     WHEREAS, NationsBank, Holdings and Barnett have entered into the Agreement
and Plan of Merger, dated as of August 29, 1997, and amended as of November 18,
1997, pursuant to which Barnett will merge with and into Holdings (the "Barnett
Merger") on the date hereof; and

     WHEREAS, Section 1001 of the Indenture provides that in the case of the
Barnett Merger, Holdings shall expressly assume by supplemental indenture all
the obligations under the Securities and the Indenture; and

     WHEREAS, NationsBank, as the holder of 100% of the outstanding capital
stock of Holdings, desires to assume, jointly and severally with Holdings, all
of the rights and obligations under the Securities and Indenture that are
required to be assumed by Holdings pursuant to Section 1001 of the Indenture;
and

     WHEREAS, Section 1101 of the Indenture provides that Barnett and the
Trustee may amend the Indenture and the Securities without notice to or consent
of any Holders of the Securities in order to comply with Article Ten of the
Indenture; and

     WHEREAS, this Supplemental Indenture has been duly authorized by all
necessary corporate action on the part of each of NationsBank, Holdings and
Barnett.

                                       -2-

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     NOW, THEREFORE, NationsBank, Holdings, Barnett and the Trustee agree as
follows for the equal and ratable benefit of the Holders of the Securities:

                                    ARTICLE I
                       ASSUMPTION BY SUCCESSOR CORPORATION
                              AND ITS PARENT ENTITY

     SECTION 1.1. Assumption of the Securities. NationsBank hereby expressly
assumes, jointly and severally with Holdings, the due and punctual payment of
the principal of and interest on the Securities and the performance of every
covenant of the Indenture on the part of Barnett to be performed or observed.

     SECTION 1.2. Trustee's Acceptance. The Trustee hereby accepts this
Supplemental Indenture and agrees to perform the same under the terms and
conditions set forth in the Indenture.

                                   ARTICLE II
                                  MISCELLANEOUS

     SECTION 2.1. Effect of Supplemental Indenture. Upon the later to occur of
(i) the execution and delivery of this Supplemental Indenture by NationsBank,
Holdings, Barnett and the Trustee and (ii) the consummation of the Barnett
Merger, the Indenture shall be supplemented in accordance herewith, and this
Supplemental Indenture shall form a part of the Indenture for all purposes, and
every Holder of Securities heretofore or hereafter authenticated and delivered
under the Indenture shall be bound thereby.

     SECTION 2.2. Indenture Remains in Full Force and Effect. Except as
supplemented hereby, all provisions in the Indenture shall remain in full force
and effect.

     SECTION 2.3. Indenture and Supplemental Indenture Construed Together. This
Supplemental Indenture is an indenture supplemental to and in implementation of
the Indenture, and the Indenture and this Supplemental Indenture shall
henceforth be read and construed together.

     SECTION 2.4. Confirmation and Preservation of Indenture. The Indenture as
supplemented by this Supplemental Indenture is in all respect confirmed and
preserved.

     SECTION 2.5. Conflict with Trust Indenture Act. If any provision of this
Supplemental Indenture limits, qualifies or conflicts with any

                                       -3-

<PAGE>

provision of the Trust Indenture Act ("TIA") that is required under the TIA to
be part of and govern any provision of this Supplemental Indenture, the
provision of the TIA shall control. If any provision of this Supplemental
Indenture modifies or excludes any provision of the TIA that may be so modified
or excluded, the provision of the TIA shall be deemed to apply to the Indenture
as so modified or to be excluded by this Supplemental Indenture, as the case may
be.

     SECTION 2.6. Severability. In case any provision in this Supplemental
Indenture shall be invalid, illegal or unenforceable, the validity, legality and
enforceability of the remaining provisions shall not in any way be affected or
impaired thereby.

     SECTION 2.7. Terms Defined in the Indenture. All capitalized terms not
otherwise defined herein shall have the meanings ascribed to them in the
Indenture.

     SECTION 2.8. Headings. The Article and Section headings of this
Supplemental Indenture have been inserted for convenience of reference only, are
not to be considered part of this Supplemental Indenture and shall in no way
modify or restrict any of the terms or provisions hereof.

     SECTION 2.9. Benefits of Supplemental Indenture, etc. Nothing in this
Supplemental Indenture or the Securities, express or implied, shall give to any
Person, other than the parties hereto and thereto and their successors hereunder
and thereunder and the Holders of the Securities, any benefit of any legal or
equitable right, remedy or claim under the Indenture, this Supplemental
Indenture or the Securities.

     SECTION 2.10. Successors. All agreements of Holdings and NationsBank in
this Supplemental Indenture shall bind their successors. All agreements of the
Trustee in this Supplemental Indenture shall bind its successors.

     SECTION 2.11. Trustee Not Responsible for Recitals. The recitals contained
herein shall be taken as the statements of Barnett, NationsBank and Holdings,
and the Trustee assumes no responsibility for their correctness.

     SECTION 2.12. Certain Duties and Responsibilities of the Trustees. In
entering into this Supplemental Indenture, the Trustee shall be entitled to the
benefit of every provision of the Indenture relating to the conduct or affecting
the liability or affording protection to the Trustee, whether or not elsewhere
herein so provided.

                                       -4-

<PAGE>

     SECTION 2.13. Governing Law. This Supplemental Indenture shall be governed
by, and construed in accordance with, the laws of the State of New York but
without giving effect to applicable principles of conflicts of law to the extent
that the application of the laws of another jurisdiction would be required
thereby.

     SECTION 2.14. Counterpart Originals. The parties may sign any number of
copies of this Supplemental Indenture. Each signed copy shall be an original,
but all of them together represent the same agreement.

                                       -5-

<PAGE>

         IN WITNESS WHEREOF, the parties have caused this Supplemental Indenture
to be duly executed as of the date first written above.

                             NationsBank Corporation

                             By:   /s/ JOHN E. MACK
                                -----------------------------------------
                                   Name:
                                   Title:

                             NB Holdings Corporation

                             By:   /s/ JOHN E. MACK
                                -----------------------------------------
                                   Name:
                                   Title:

                             Barnett Banks, Inc.

                             By:   /s/ CHARLES E. RICE
                                -----------------------------------------
                                   Name: Charles E. Rice
                                   Title: Chairman and Chief Executive Officer

                             First Trust of New York, National
                             Association, as Trustee

                             By:   /s/ WARD A. SOFONER
                                -----------------------------------------
                                   Name: Ward A. Sofoner
                                   Title: Vice President

                                        6

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