BALTIMORE

For more Baltimore convention information, call the Baltimore Area Convention and Visitors Association at (410) 659-7300 within Maryland or (800) 343-3468 outside Maryland.

March 20-22: American Institute of Ultrasound in Medicine, Convention Center. Expected attendance: 2,500.

March 24-26: Mary Kay Cosmetics, Convention Center. Contact: Rosemary Hall. Expected attendance: 2,000.

March 29-31: Society of Manufacturing Engineers. Contact: Lisa Wilkinson, 1 SME Drive, Box 930, Dearborn, Mich. 48121. Attendance: 3,500.

May 4-6: Association of American Medical Colleges, teaching hospitals conference, Hyatt Regency. Contact: Marcie A. Foster, N St. NW, Washington, D.C. 20037-1126. Expected attendance: 200.

WASHINGTON

For more Washington area convention information, call the Washington Convention and Visitors Association at (202) 789-7000.

* March 21-22: National Association of Postal Supervisors, Marriott-Crystal Gateway. Contact: Bob McLean, (202) 484-6070. Expected attendance: 500.

* March 22-24: National Trades Productions, information technology forum, D.C. Convention Center. Contact: Robbi Lycett, (703) 683-8500. Estimated attendance: 75,000.

* March 23-25: Medical Group Management Association, JW Marriott. Contact: Sandy Blum (303) 799-1111. Expected attendance: 400.

* March 23-26: Medical Records Institute, Hyatt Crystal City. Contact: Peter Waegerman (617) 964-9496. Expected attendance: 1,500.