DETROIT/MARCH 10 Roger Black, author of Web Sites That Work, addresses the Art Directors Club of Detroit. Location for the 7 p.m. event has yet to be determined. For info, call (248) 988-1281. MINNEAPOLIS/MARCH 11 The Advertising Federation of Minnesota hosts Harry Beckwith, author of Selling the Invisible: A Field Guide to Modern Marketing, at its monthly luncheon. The event is at the Minneapolis Hilton, beginning at 11:30 a.m. For info, call the Ad Fed at (612) 339-5470. CHICAGO/MARCH 11 The Media Research Club of Chicago welcomes speakers Henry Laura of Arbitron and Geoff Wicken of SMRB, discussing “Multinational Expansion in Research.” The event is at The 410 Club, beginning at noon. For info, call Sara Withrow at (312) 683-5117. DETROIT/MARCH 18 The American Marketing Association of Detroit holds its first Internet Marketing Workshop. Joyce Fierens of Pontiac-GMC is the featured speaker. The event is at the MSU Management Education Center in Troy, Mich. Dinner begins at 6 p.m., followed by the program. For info, call Ron Peterson at (313) 427-5065.