DIAGNOSTIC/RETRIEVAL SYSTEMS, INC.
                                  5 Sylvan Way
                              Parsippany, NJ 07054

                                                  March 8, 1996

          Dear Stockholder:

                    As of March 7, 1996, your proxy had not yet been
          received for the Special Meeting of Stockholders of
          Diagnostic/Retrieval Systems, Inc. (the "Company").

                    Your Board of Directors has determined that
          converting each outstanding share of Class A and Class B
          common stock into a new single class of common stock is in
          the best interests of the Company.  Also under consideration
          at the Special Meeting are other changes to the Certificate
          of Incorporation and By-Laws.  The reclassification of the
          shares is conditioned upon the approval of these other
          changes which are designed to put into effect measures which
          will protect the Company from takeovers and related actions
          which are not in the best interests of all shareholders.

                    The Board has approved each of the proposals and
          recommends that stockholders vote FOR approval.  Your vote
          is important, regardless of the number of shares you own.

                    Additional information is contained in the Proxy
          Statement previously sent to you.  If you have any questions
          or need an additional copy of the Statement, please call
          MacKenzie Partners, Inc., who is assisting us with the
          solicitation at (800) 322-2885 (toll-free).

                    TIME IS SHORT.  EVEN IF YOU EXPECT TO ATTEND THE
          SPECIAL MEETING IN PERSON, PLEASE SIGN, DATE AND RETURN THE
          ENCLOSED DUPLICATE PROXY IN THE POSTAGE PAID ENVELOPE AS
          SOON AS POSSIBLE.

                    We appreciate your prompt attention to voting your
          shares and thank you for your continued interest in your
          Company.

                                             Sincerely,

                                             Mark S. Newman
                                             Chairman of the Board,
                                               President and Chief
                                               Executive Officer