As America slowly relaxed its moral codes in the postwar era, pulp novels offered an initiation to the previously hidden demimondes of sex and hedonistic excess. While the cover blurbs feigned shock and disgust, the cover art reveled in illicit danger, their titillating scenarios offering a lurid window on America’s suppressed desires. Now, collected here, are 23 postcards featuring tigresses and temptresses in all their reckless glory.