'Girls, Gags & Giggles""--this was publisher Robert Harrison's recipe for dishing up the American pin-up to the U.S. male. In the 1950s his girls magazines sold by the millions, before becoming icons of pulp and trash culture. These skillfully illustrated girls with their curvaceous forms and inviting lingerie soon overlook America's national dessert, in terms of popularity, and even developed considerable potential as a cultural export during the 1940s. ""Never show everything,"" was always the motto.