Following its 1932 introduciton by the Eastman Kodak Company, the 8mm home movie film format became the cheaper alternative to shooting movies.  By the 1950s, 8mm was the preferred format, whether to record junior's 3rd birthday part, a family's vacation travelogue, or a big-breasted burlesque dancer's erotic strip-tease.  Guess which one evolved into a marketable commodity?  Suddenly these 8mm nudie films, known as 'loops' or 'stags' and designed to be shown in the privacy of one's own home, were available over-the-counter in camera stores and adult bookstores.  Unceremoniously packaged in white boxes, they sported photos of the actual female performers and the girls' names thoughtfully stenciled on the sides.