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                                                                     EXHIBIT 21


                      MONTHLY CERTIFICATEHOLDERS' STATEMENT

                           Discover Card Trust 1992 B

                        --------------------------------

                                   CREDIT CARD

                            PASS-THROUGH CERTIFICATES

                        --------------------------------


         Under the Pooling and Servicing Agreement dated as of Dec. 1, 1992 (the
"Agreement") by and among Greenwood Trust Company (the "Servicer"), Discover
Receivables Financing Group and Wilmington Trust Company, as Trustee,the
Servicer is required to prepare certain information each month regarding current
distributions to Investor Certificateholders and the performance of the Trust
during the previous month. The information which is required to be prepared with
respect to the distribution of June 16, 1997, and with respect to the
performance of the Trust during the Due Period ended in May 31, 1997,is set
forth below. Certain of the information is presented on the basis of an original
principal amount of $1,000 per Class A Certificate. Certain other information is
presented based on the aggregate amounts for the Trust as a whole.

         Information Regarding the Current Monthly Distribution (stated on the
basis of $1,000 original principal amount).

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1.  The total amount of the distribution to Class A Certificate-holders on June
    16, 1997, per $1,000 interest ........................ $      5.666666673

2.  The total amount of the distribution to Class B Certificate-holders on June
    16, 1997, per $1,000 interest ........................ $      6.250000000

3.  The amount of the distribution set forth in paragraph 1 above in respect of
    interest on the Class A Certificates, per $1,000 interest
    ....................................................... $      5.666666673

4.  The amount of the distribution set forth in paragraph 2 above in respect of
    interest on the Class B Certificates, per $1,000 interest
    ....................................................... $      6.250000000






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5.  The amount of the distribution set forth in paragraph 1 above in respect of
    principal on the Class A Certificates, per $1,000 interest
    ....................................................... $      0.000000000

6.  The amount of the distribution set forth in paragraph 2 above in respect of
    principal on the Class B Certificates, per $1,000 interest
    ....................................................... $      0.000000000


Information Regarding the Performance of the Trust.
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1. Collections of Receivables.
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    (a) The aggregate amount of Finance Charge Collections processed during the
        related Due Period ................................ $    12,318,675.44

    (b) The aggregate amount of Principal Collections processed during the
        related Due Period ................................ $   120,378,447.94
    (c) The aggregate amount of Finance Charge Collections processed during the
        related Due Period which was allocated in respect of the Investor
        Certificates ...................................... $     9,439,800.99

    (d) The aggregate amount of Principal Collections processed during the
        related Due Period which was allocated in respect of the Investor
        Certificates ...................................... $    92,246,004.66

    (e) The aggregate amount of Finance Charge Collections processed during the
        related Due Period which was allocated in respect of the Class A
        Certificates ...................................... $     8,581,189.31

    (f) The aggregate amount of Principal Collections processed during the
        related Due Period which was allocated in respect of the Class A
        Certificates ...................................... $    83,855,626.84

    (g) The aggregate amount of Finance Charge Collections processed during the
        related Due Period which was allocated in respect of the Class B
        Certificates ...................................... $       858,611.68

    (h) The aggregate amount of Principal Collections processed during the
        related Due Period which was allocated in respect of the Class B
        Certificates ...................................... $     8,390,377.82

    (i) The aggregate amount of Finance Charge Collections processed during the
        related Due Period which was allocated in respect of the Seller
        Certificate ....................................... $     2,878,874.45



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    (j) The aggregate amount of Principal Collections processed during the
        related Due Period which was allocated in respect of the Seller
        Certificate ....................................... $    28,132,443.28


2. Principal Receivables in the Trust.
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    (a) The aggregate amount of Principal Receivables in the Trust as of the end
        of the Due Period ended in May 31, 1997 (which reflects the Principal
        Receivables represented by the Seller Certificate and the Investor
        Certificates) ......... ........................... $   789,393,251.98

    (b) The amount of Principal Receivables in the Trust represented by the
        Class A Certificates (the "Class A Interest") as of the Due Period Ended
        in May 31, 1997 ................................... $   550,000,000.00

    (c) The amount of Principal Receivables in the Trust represented by the
        Class B Certificates (the "Class B Interest") as of the Due Period Ended
        in May 31, 1997 ................................... $    55,000,000.00

    (d) The Class A Interest and the Class B Interest set forth in paragraph 2
        (b) and 2 (c) above as a percentage of the aggregate amount of Principal
        Receivables set forth in paragraph 2 (a) above ....              76.64%

    (e) The Class A Interest set forth in paragraph 2 (b) above as a percentage
        of the aggregate amount of Principal Receivables set forth in paragraph
        2 (a) above .......................................              69.67%

    (f) The Class B Interest set forth in paragraph 2 (c) above as a percentage
        of the aggregate amount of Principal Receivables set forth in paragraph
        2 (a) above .......................................               6.97%

    (g) The Deficit Controlled Amortization Amount (after giving effect to
        payments made on such Distribution Date)........... $             0.00

3. Investor Charged-Off Amount.
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    (a) The aggregate amount of Receivables charged-off as uncollectible
        during the Due Period ended in May 31, 1997 allocable to the Investor
        Certificates (the "Investor Charged-Off Amount") .. $     3,125,687.25

    (b) The aggregate amount of Receivables charged-off as Uncollectible
        during the Due Period ended in May 31, 1997 allocable to the Class A
        Certificates (the "Class A Charged-Off Amount") ... $     2,841,385.54




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    (c) The sum of (i) the aggregate amount of Receivables charged-off as
        uncollectible during the Due Period ended in May 31, 1997 allocable to
        the Class B Certificates and (ii) the sum of (a) the positive
        difference, if any, between the Class B Subordinated Payment and Class B
        Finance Charge Collections (less Class B Excess Servicing) and (b) the
        amount by which the Investor Interest for the Class B Certificates is
        reduced pursuant to subsection 4.03(c) (i)(C)(the "Class B Charged-Off
        Amount") ......................................... $      2,690,221.27

    (d) The Cumulative Class A Charged-Off Amount on June 16, 1997 ...........
        .................................................. $             0.00

    (e) The Cumulative Class B Charged-Off Amount on June 16, 1997 ...........
        .................................................. $             0.00


4. Investor losses; Reimbursement of Charge-Offs.
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    (a) The amount of Class A Investor Loss, as defined in Section 4.06 (b) of
        the Agreement, during the Due Period ended in May 31, 1997 ...........
        ................................................... $             0.00

    (b) The amount of Class B Investor Loss, as defined in Section 4.06 (b) of
        the Agreement, during the Due Period ended in May 31, 1997 ...........
        ................................................... $             0.00

    (c) The amount of Class A Investor Loss set forth in Paragraph 4 (a) above,
        per $1,000 interest (which will have the effect of reducing, pro rata,
        the amount of each Class A Certificate-holder's investment)...........
        ................................................... $      0.000000000

    (d) The amount of Class B Investor Loss set forth in Paragraph 4 (b) above,
        per $1,000 interest (which will have the effect of reducing, pro rata,
        the amount of each Class B Certificate-holder's investment)............
        ................................................... $      0.000000000

    (e) The total amount reimbursed to the Trust in the current month pursuant
        to Section 4.06 (c) of the Agreement, if any, in respect of Class A
        Investor Losses in prior months ................... $             0.00

    (f) The total amount reimbursed to the Trust in the current month pursuant
        to Section 4.06 (c) of the Agreement, if any, in respect of Class B
        Investor Losses in prior months ................... $             0.00






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    (g) The amount set forth in paragraph 4 (e) above, per $1,000 interest
        (which will have the effect of increasing, pro rata, the amount of each
        Class A Certificateholder's investment)............ $      0.000000000

    (h) The amount set forth in paragraph 4 (f) above, per $1,000 interest
        (which will have the effect of increasing, pro rata, the amount of each
        Class B Certificateholder's investment)............ $      0.000000000

    (i) The aggregate amount of Class A Investor Losses in the Trust as of the
        end of the day on June 16, 1997 ................... $             0.00

    (j) The aggregate amount of Class B Investor Losses in the Trust as of the
        end of the day on June 16, 1997 ................... $             0.00

    (k) The amount set forth in paragraph 4 (i) above, per $1,000 interest
        (which will have had the effect of reducing, pro rata, the amount of
        Class A Certificateholder's investment ) .......... $      0.000000000

    (l) The amount set forth in paragraph 4 (j) above, per $1,000 interest
        (which will have had the effect of reducing, pro rata, the amount of
        Class B Certificateholder's investment ) .......... $      0.000000000


5. Investor Servicing Fee.
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    (a) The amount of the Class A Monthly Servicing Fee payable by the Trust to
        the Servicer for the month of May 31, 1997......... $       916,633.42

    (b) The amount of the Class B Monthly Servicing Fee payable by the Trust to
        the Servicer for the month of May 31, 1997......... $        91,715.98


6. Available Subordinated Amount.
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    (a) The amount available to be applied pursuant to Sections 4.03 (c) (i) (B)
        and (C) of the Agreement as of the end of the day on June 16, 1997
        ................................................... $    55,000,000.00


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    (b) The amount set forth in paragraph 7(a) above as a percentage of the
        Class A Interest. .................................              10.00%


7. Available Class B Credit Enhancement Amount.
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    (a) The amount available to be drawn under the Class B Credit Enhancement
        pursuant to Sections 4.03 (c) (i) (G) and (H) of the Agreement as of the
        end of the day on June 16, 1997.................... $    30,250,000.00

    (b) The amount set forth in paragraph 8(a) above as a percentage of the
        Class B Interest. .................................              55.00%


8. The Pool Factor.
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    The Pool Factor represents the ratio of the amount of the Class A Interest
    as of the end of the day on June 16, 1997 to the amount of the Class A
    Interest as of the Closing Date. The amount of a Class A Certificateholder's
    pro rata share of the Class A Interest can be determined by multiplying the
    original denomination of the Class A Certificateholder's Certificate by the
    Pool Factor ...........................................         1.00000000

    The Pool Factor represents the ratio of the amount of the Class B Interest
    as of the end of the day on June 16, 1997 to the amount of the Class B
    Interest as of the Closing Date. The amount of a Class B Certificateholder's
    pro rata share of the Class B Interest can be determined by multiplying the
    original denomination of the Class B Certificateholder's Certificate by the
    Pool Factor ...........................................         1.00000000











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9.  The aggregate outstanding balance of receivables that were delinquent by 30
    to 59 days as of the close of business on the last day of the Due Period
    related to such Distribution Date...................... $    17,799,214.48


10. The aggregate outstanding balance of receivables that were delinquent by 60
    days or more as of the close of business on the last day of the Due Period
    related to such Distribution Date...................... $    25,876,186.75










                       Greenwood Trust Company as Servicer

                                          By: ______________________________
                                          Title: Vice President, Director of
                                          Accounting and Treasurer






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                          MONTHLY SERVICER CERTIFICATE

                           DISCOVER CARD TRUST 1992 B
                           --------------------------

                                   CREDIT CARD

                            PASS-THROUGH CERTIFICATES
                           --------------------------


         The undersigned , a duly authorized representative of Greenwood Trust
Company ("Greenwood"), as Servicer pursuant to the Pooling and Servicing
Agreement dated as of Dec. 1, 1992 (the "Pooling and Servicing Agreement") by
and among Greenwood, Discover Receivables Financing Group and Wilmington Trust
Company, does hereby certify as follows:



                                                            
   1. Greenwood  is Servicer  under the Pooling and
      Servicing Agreement.

   2. The undersigned is a Servicing Officer.

   3. The aggregate amount of Collections processed
      during the related Due Period was equal to ............ $132,697,123.38

   4. The  aggregate  amount of  Class A  Principal
      Collections  processed by the Servicer during
      the related Due Period is equal to .................... $ 83,855,626.84

   5. The aggregate amount  of the Class A  Finance
      Charge  Collections processed by the Servicer
      during the related Due Period is equal to ............. $  8,581,189.31

   6. The sum of all amounts payable to the  Class A
      Certificateholders on the current Distribution
      Date is equal to ...................................... $  3,116,666.67

   7. The  aggregate  amount of  Class B  Principal
      Collections  processed by the Servicer during
      the related Due Period is equal to .................... $  8,390,377.82

   8. The aggregate amount  of the Class B  Finance
      Charge  Collections processed by the Servicer
      during the related Due Period is equal to ............. $    858,611.68







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   9. The  amount  of  drawings  under  the  Class B
      Credit Enhancement required to be made on  the
      succeeding Drawing Date pursuant to
      (a)  Section 4.03(c)(i)(G) is equal to...... $                     0.00
      (b)  Section 4.03(c)(i)(H) is equal to...... $                     0.00
      (c)  Section 4.05 is equal to............... $                     0.00

  10. The sum of all amounts payable to the Class B
      Certificateholders on the current Distribution
      Date is equal to ........................... $               343,750.00

  11. Attached hereto is a true copy of the statement required to be delivered
      by the Servicer on the date of this Certificate to the Trustee pursuant to
      section 5.02.


         IN WHITNESS WHEREOF , the undersigned has duly executed and and
delivered this certificate this day of June 16, 1997



                                     GREENWOOD TRUST COMPANY, as Servicer

                                     By: ___________________________________
                                     Title: Vice President, Director of
                                     Accounting and Treasurer