 Sold under the counter in places such as tobacco stores and burlesque houses, millions of Tijuana bibles were sold at the height of their popularity in the 1930s.They went into a steep decline after World War II and by the mid-1950s only a small trickle of new product was still appearing on the market.Men's magazines of the second half of the 20th century were common venues for erotic comics, particularly single-panel gags featuring naked women or couples in sexual situations.