1 Exhibit 23.1 Consent of Independent Certified Public Accountants The Source Information Management Company St. Louis, Missouri We hereby consent to the incorporation by reference in the Registration Statement Form S-8 (No. 333-16039) of The Source Information Management Company (the Company) of our reports dated April 14, 2000, relating to the consolidated financial statements and schedule of the Company appearing in the Company's Annual Report on Form 10-K as of and for the year ended January 31, 2000. /s/BDO Seidman, LLP St. Louis, Missouri April 28, 2000