The R.A. Maguire Cover Art gallery features lots of lovely paperback covers from the 50s and 60s, mostly in tawdry genres like crime, detective, exploitation and even science-fiction. The site also has a gallery of photos the artist took for reference to draw the covers.
The overwrought blurbs on these books are sometimes hilarious:
Perfume and Pain – She knew no desire but that for another woman.
TV Tramps – On camera they violated the Code of Decency; Off camera they violated each other.
House of Fury – A Slashing Story of Girls Behind Bars.
The Fires Within – SUBURBIA, U.S.A.; The story of a wife who loved too much… and too many
Hell’s Angels – Her life was a paradise of sex and drugs, but she died one hell of a death
But the best one has got Muscle Boy – They Got Their Kicks From Forbidden Feats of Strength