The “Mad Men” TV series has given the public a look inside the world of advertising agencies, at least as they (supposedly) existed in the early 1960s.I worked in ad agencies for 14 years – not in the Madison Avenue shops where they cook up campaigns for Coke and McDonald’s, but at places in Milwaukee, where our clients dealt in industrial products like engines, forklifts and loading dock levelers.Along the way, I learned a few sayings. Like: Don’t tell my mother I work for an ad agency – she thinks I play piano in a whorehouse. Or: In the ad
