I was on ebay, and ran across these trashy novels. A sampling of what's on ebay, along with old S-F pulp magazines and other vintage trash fiction novels of the era on any given day. In the 50's and 60's, lesbianism was fodder for many a tittilating trash fiction novel, directed at a male readership, one of many male fantasies catered to in such books.
For the guy who fantasizes about being the salami in that sandwich!
They're fun to look at, and make fun of. I've even seen there's a seller on ebay who takes some of the more outlandish covers and sells the reproduced covers on cigarette cases.