UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

                                     ----

                                   FORM 10-K
                       FOR ANNUAL AND TRANSITION REPORTS
                    PURSUANT TO SECTIONS 13 OR 15(d) OF THE
                        SECURITIES EXCHANGE ACT OF 1934



(Mark One)

|X|    ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
       EXCHANGE ACT OF 1934

   For the fiscal year ended December 31, 2005

                                      or

| |    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURI-
       TIES EXCHANGE ACT OF 1934

For the transition period from ________ to ________


                       Commission File Number: 001-32030

                            Lehman ABS Corporation,
                            -----------------------
                                 on behalf of:

        S&P-Linked Investment Trust Certificates, Series 1997-SP-1 Trust
------------------------------------------------------------------------------
            (Exact name of registrant as specified in its charter)

           Delaware                                  13-3447441
-------------------------------          ------------------------------------
(State or other jurisdiction of          (I.R.S. Employer Identification No.)
incorporation or organization)

          745 Seventh Avenue, New York, New York              10019
         ----------------------------------------          ----------
         (Address of principal executive offices)          (Zip Code)

Registrant's telephone number, including area code:  (212) 526-7000

Securities registered pursuant to Section 12(b) of the Act:

Title of Class                                     Name of Registered Exchange
--------------                                     ---------------------------

S&P-Linked Investment Trust            New York  Stock Exchange ("NYSE")
Certificates, Series 1997-SP-1

Securities registered pursuant to Section 12(g) of the Act:  None

Indicate by check mark if the registrant is a well-known seasoned issuer, as
defined in Rule 405 of the Securities Act.
Yes | |  No |X|


<PAGE>

Indicate by check mark if the registrant is not required to file reports
pursuant to Section 13 or Section 15(d) of the Act.
Yes | |  No |X|

Indicate by check mark whether the registrant: (1) Has filed all reports
required to be filed by section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to
file requirements for the past 90 days.
Yes |X|  No | |

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405
of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to
this Form 10-K. |X|

Indicate by check mark whether the registrant is an accelerated filer (as
defined in Rule 12b-2 of the Act).
Yes | |  No |X|

Indicate by check mark whether the registrant is a shell company (as defined
in Rule 12b-2 of the Act).
Yes | |  No |X|

State the aggregate market value of the voting and non-voting common equity
held by non-affiliates computed by reference to the price at which the common
equity was last sold, or the average bid and asked price of such common
equity, as of the last business day of the registrant's most recently
completed second fiscal quarter:

   The registrant has no voting stock or class of common stock that is held by
non-affiliates.

                      DOCUMENTS INCORPORATED BY REFERENCE

                                     None.

                               Introductory Note

Lehman ABS Corporation (the "Depositor") is the Depositor in respect of the
S&P-Linked Investment Trust Certificates Series 1997-SP-1 Trust (the "Trust"),
a common law trust formed pursuant to the Standard Terms for Trust Agreements,
dated as of February 28, 1996, between the Depositor and The Bank of New York,
as trustee (the "Trustee"), as supplemented by a Series Supplement (the
"Series Supplement"), dated as of August 29, 1997, in respect of the Trust.
The Trust's assets consist solely of (i) United States Treasury zero coupon
STRIPS, due August 15, 2007 and (ii) the rights of the Trust under an ISDA
Master Agreement with WestLB AG, as successor to Westdeutsche Landesbank
Girozentrale, acting through its New York Branch. The Certificates do not
represent obligations of, or interests in, the Depositor or the Trustee.

                                    PART I

Item 1. Business.
-----------------
         Not Applicable

Item 1A. Risk Factors.
----------------------
         Not Applicable

Item 1B. Unresolved Staff Comments.
-----------------------------------
         Not Applicable

Item 2. Properties.
-------------------
         Not Applicable

Item 3. Legal Proceedings.
--------------------------


                                      2
<PAGE>

         None

Item 4. Submission of Matters to a Vote of Security Holders.
------------------------------------------------------------
         None

                                    PART II

Item 5. Market for Registrant's Common Equity, Related Stockholder Matters and
------------------------------------------------------------------------------
Issuer Purchases of Equity Securities.
--------------------------------------

     The publicly offered Certificates representing investors' interest in the
Trust are represented by one or more physical Certificates registered in the
name of "Cede & Co.", the nominee of The Depository Trust Company. Those
publicly offered Certificates are listed on the NYSE.

Item 6. Selected Financial Data.
--------------------------------
         Not Applicable

Item 7. Management's Discussion and Analysis of Financial Condition and
-----------------------------------------------------------------------
Results of Operation.
---------------------
         Not Applicable

Item 7A. Quantitative and Qualitative Disclosures About Market Risk.
--------------------------------------------------------------------
         Not Applicable

Item 8. Financial Statements and Supplementary Data.
----------------------------------------------------
         Not Applicable

Item 9. Changes in and Disagreements With Accountants on Accounting and
-----------------------------------------------------------------------
Financial Disclosure.
---------------------
         None

Item 9A. Controls and Procedures.
--------------------------------
         Not Applicable

Item 9B. Other Information.
--------------------------
         None



                                   PART III

Item 10. Directors and Executive Officers of the Registrant.
------------------------------------------------------------
         Not Applicable

Item 11. Executive Compensation.
--------------------------------
         Not Applicable

Item 12. Security Ownership of Certain Beneficial Owners and Management
-----------------------------------------------------------------------
and Related Stock Matters.
--------------------------
         Not Applicable

Item 13. Certain Relationships and Related Transactions.
--------------------------------------------------------
         None

Item 14. Principal Accounting Fees and Services.
------------------------------------------------
         Not Applicable



                                      3
<PAGE>

                                    PART IV

Item 15. Exhibits, Financial Statement Schedules.
-------------------------------------------------
          (a)  The following documents have been filed as part of this report.

               1.   None.

               2.   None.

               3.   Exhibits:

                    31.1 - Certification by Senior Vice President of the
                    Registrant pursuant to 15 U.S.C. Section 7241, as adopted
                    pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

                    31.2 - Annual Compliance Report by Trustee pursuant to 15
                    U.S.C. Section 7241, as adopted pursuant to Section 302 of
                    the Sarbanes-Oxley Act of 2002.

          (b)  See Item 15(a) above.

          (c)  Not Applicable


                                      4
<PAGE>



                                   SIGNATURE

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                  Lehman ABS Corporation, as Depositor for the
                                  Trust (the "Registrant")



Dated:   March 27, 2006           By:      /s/ CHARLES M. WEAVER
                                     ---------------------------
                                           Name:  Charles M. Weaver
                                           Title:  Senior Vice President



                                      5
<PAGE>


<TABLE>
<CAPTION>
                                       EXHIBIT INDEX

----------------------------------------------------------------------------------------
 Reference
Number per
Item 601 of                  Description of Exhibits                  Exhibit Number
egulation SK                                                         in this Form 10-K
----------------------------------------------------------------------------------------
<S>           <C>                                                          <C>
  (31.1)      Certification by Senior Vice President of the                31.1
              Registrant pursuant to 15 U.S.C. Section 7241, as
              adopted pursuant to Section 302 of the Sarbanes-Oxley
              Act of 2002.
----------------------------------------------------------------------------------------
  (31.2)      Annual Compliance Report by Trustee pursuant to 15
              U.S.C. Section 7241, as adopted pursuant to Section          31.2
              302 of the Sarbanes-Oxley Act of 2002.
----------------------------------------------------------------------------------------
</TABLE>



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