SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549

                                     FORM 10-K



                      Pursuant to Section 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, 1999

______________________ or

[    ] Transition Report Pursuant to Section 13 or 15d of the Securities
     Exchange Act of 1934
For the transition period from _____________  to ________

Commission file Number 333-53115

   Credit Suisse First Boston Mortgage Securities Corp.
   Mortgage-Backed Pass-Through Certificates, Series 99-WM3
(Exact name of registrant as specified in its charter)

   Delaware                          13-3320910
(State or other jurisdiction         (I.R.S. Employer
of incorporation or organization)     Identification No.)

11 Madison Avenue, 5th Floor
New York, New York                                            10010

(Address of Principal Executive Offices)              (Zip Code)

Registrant's telephone number, including area code:  (212) 325-2000

   Securities registered pursuant to Section 12(b) of the Act
         NONE
   Securities registered pursuant to Section 12(g) of the Act

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 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 such filing
requirements for the past 90 days.
     Yes              X No *
The closing date for the transaction was in December 1999

                                       PART I

Item 2.  Properties
   Not applicable on reliance of Relief Letters

Item 3. Legal Proceedings
      There were no legal proceedings.

Item 4. Submission of Matters to a Vote of Security Holders
      There were no matters submitted to a vote of the Security Holders.

                                    PART II

Item 5. Market for Registrant's Common Equity and Related Stockholder matters
   There were under 300 participants in the DTC system holding
   positions in the Cede certificates.
   The following were Noteholders and Certificateholders of record
   as of the end of the reporting year.
   Washington Mutual Bank, F.A.
   Mortgage-Backed Pass-Through Certificates, Series 99-WM3
   Series 1999-WM3 Class 1-A-1       Cede & Co.
   Series 1999-WM3 Class 1-A-2       Cede & Co.
   Series 1999-WM3 Class 1-A-3       Cede & Co.
   Series 1999-WM3 Class 1-A-4       Cede & Co.
   Series 1999-WM3 Class 1-A-P       Cede & Co.
   Series 1999-WM3 Class 2-A-1       Cede & Co.
   Series 1999-WM3 Class 2-A-2       Cede & Co.
   Series 1999-WM3 Class 2-A-3       Cede & Co.
   Series 1999-WM3 Class 2-A-4       Cede & Co.
   Series 1999-WM3 Class 2-A-5       Cede & Co.
   Series 1999-WM3 Class 2-A-P       Cede & Co.
   Series 1999-WM3 Class 1-M-1       Cede & Co.
   Series 1999-WM3 Class 1-M-2       Cede & Co.
   Series 1999-WM3 Class 1-M-3       Cede & Co.
   Series 1999-WM3 Class 2-M-1       Cede & Co.
   Series 1999-WM3 Class 2-M-2       Cede & Co.
   Series 1999-WM3 Class 2-M-3       Cede & Co.
   Series 1999-WM3 Class 1-B-1       Washington Mutual Bank, FA
   Series 1999-WM3 Class 1-B-2       Washington Mutual Bank, FA
   Series 1999-WM3 Class 2-B-1       Credit Suisse First Boston Corporation
   Series 1999-WM3 Class 2-B-2       Credit Suisse First Boston Corporation
   Series 1999-WM3 Class B-3         Credit Suisse First Boston Corporation

   Credit Suisse First Boston Corporation
   ATTN  Kari Skilbred
   11 Madison Avenue
   New York, NY  10010

   Washington Mutual Bank, FA
   ATTN Paul Bonde Mailstop WMT 0602
   1201 Third Ave
   Seattle, WA  98101







   There is no established public trading market for the notes.

Item 9. Changes in and Disagreements with Accountants on Accounting and
Financial Disclosures: Information required by Item 304 of Reg. S-K.

       There were no changes in and/or disagreements with Accountants on
       Accounting and Financial Disclosures.

                                    PART IV

Item 12.  Security Ownership of Certain Beneficial Owners and Management
   The Notes are represented by one or more notes registered in the name of
   of Cede & Co., the nominee of The Depository Trust Company.  An investor
   holding Notes is not entitled to receive a certificate representing such
   Note, except in limited circumstances.  Accordingly, Cede & Co. is the
   sole holder of Notes, which it holds on behalf of brokers, dealers,
   banks and other participants in the DTC system.  Such participants may
   hold Notes for their own accounts or for the accounts of their customers.
   The address of Cede & Co. is:
   Cede & Co.
   c/o The Depository Trust Company
   55 Water St.
   New York, New York 10041

Item 13.  Certain Relationships and Related Transactions.
   There has not been, and there is not currently proposed, any transactions
   or series or transactions, to which any of the Trust, the Registrant,
   the Trustee or the Servicer is a party with any Noteholder who, to the
   knowledge of the Registrant and Servicer, owns of record or beneficially
   more than five percent of the Notes.


Item 14. Exhibits, Financial Statement Schedules, and Reports on Form 8-K

   (a) 1.  Not Applicable
         2.  Not Applicable
         3.  Exhibits
              99.1  Annual Summary Statement
              99.2  Annual Statement as to Compliance.
              99.3  Annual Independent Public
                       Accountant's Servicing Report.

   (b)   Reports on Form 8-K
   The Registrant has filed Current Reports on Form 8-K
   with the Securities and Exchange Commision dated:
   None



   (c)    See (a) 3 above

   (d)    Not Applicable



                      SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) 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.

Washington Mutual Bank, F.A.
Mortgage-Backed Pass-Through Certificates, Series 99-WM3

   /s/ Barbara Grosse, Vice President
   Bank One



Date: March 31, 2000


                      EXHIBIT INDEX

   Exhibit Number     Description
            99.1      Annual Summary Statement
            99.2      Annual Statement of Compliance
            99.3      Report of Independent Accountants




       EXHIBIT 99.1 -- Summary of Aggregate Amounts or End of Year
       Amounts for the period ending December 31, 1999

   Washington Mutual Bank, F.A.
   Mortgage-Backed Pass-Through Certificates, Series 99-WM3
              Summary of Aggregate Amounts or End of Year Amounts

   Pool Balance                      1,286,097,884.66
   Principal          Collections       16,257,173.28
   Realized Loss                                 0.00
   Interest           Collections        8,147,790.56
   Servicer           Fees                       0.00
   Trustee            Fees                         NA





                           Number         Stated Principal Bal
   30-59 days deliquent       6                   1,828,060.35
   60-89 days deliquent       0                           0.00
   90+ days deliquent         0                           0.00
   Foreclosures               0                           0.00
   Bankruptcies               0                           0.00
   REO Properties             0                           0.00


   Certificate        Balance        Interest        Principal

   Class 1-A-1        661,924,000.00     0               0
   Class 1-A-2         28,400,000.00     0               0
   Class 1-A-3        174,506,000.00     0               0
   Class 1-A-4        101,785,000.00     0               0
   Class 1-A-P            349,878.20     0               0
   Class 2-A-1        100,000,000.00     0               0
   Class 2-A-2        100,400,000.00     0               0
   Class 2-A-3         17,580,000.00     0               0
   Class 2-A-4         23,592,000.00     0               0
   Class 2-A-5         28,497,000.00     0               0
   Class 2-A-P            202,701.41     0               0
   Class 1-M-1         34,607,000.00     0               0
   Class 1-M-2          6,107,000.00     0               0
   Class 1-M-3          3,562,000.00     0               0
   Class 2-M-1          9,673,000.00     0               0
   Class 2-M-2          1,707,000.00     0               0
   Class 2-M-3            996,000.00     0               0
   Class 1-B-1          2,036,000.00     0               0
   Class 1-B-2          2,036,000.00     0               0
   Class 2-B-1            569,000.00     0               0
   Class 2-B-2            569,000.00     0               0
   Class B-3            3,256,278.33     0               0









       EXHIBIT 99.2 -- Servicer's Annual Statement of Compliance
   To be supplied upon receipt by the Trustee

       EXHIBIT 99.3 -- Report of Independent Auditors
   To be supplied upon receipt by the Trustee