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                                                                  CONFORMED COPY

                       SECURITIES AND EXCHANGE COMMISSION
                             450 Fifth Street, N.W.
                            Washington, D.C.  20549


                                    FORM 8-K

                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the
                        Securities Exchange Act of 1934


       Date of Report (Date of earliest event reported): August 15, 1996


                           DISCOVER CARD TRUST 1991 B
                           --------------------------
             (Exact name of Registrant as specified in its charter)


Delaware                              0-19488             Not Applicable
- --------                              -------             --------------
(State of                             (Commission         (IRS Employer
organization)                         File Number)        Identification No.)


c/o Discover Receivables Financing Group, Inc.
12 Read's Way
New Castle, Delaware                                     19720
- ----------------------------------------------------------------
(Address of principal executive offices)               (Zip Code)


Registrant's telephone number, including area code: (302) 323-7826



                               Not Applicable
                  -----------------------------------------
               (Former address, if changed since last report)




                                 Page 1 of 15
                         Index to Exhibits is on page 4





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Item 5.  Other Events

On August 15, 1996 the Registrant made available the Monthly
Certificateholders' Statement for the Due Period of July 1996, which is
attached as Exhibit 21 hereto.

Item 7.  Financial Statements and Exhibits

(c) Exhibits

Exhibit No.           Description
- -----------           -----------

21                    Monthly Certificateholders' Statement for Discover Card
                      Trust 1991 B related to the Due Period ending July 31,
                      1996.





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                                   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.


                             DISCOVER CARD TRUST 1991 B
                                      (Registrant)
                            
                             By: DISCOVER RECEIVABLES FINANCING
                                 GROUP, INC.
                                 as originator of the Trust
                            
                            
                             By:             Birendra Kumar          
                                 ------------------------------------
                                 Birendra Kumar
                                 Vice President and Treasurer
                            

Date: August 15, 1996





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                                 EXHIBIT INDEX

Exhibit No.          Description
- -----------          -----------

21                   Monthly Certificateholders' Statement for Discover Card
                     Trust 1991 B related to the Due Period ending July 31,
                     1996.





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