Bill Crider, paperback collector and mystery / western writer, has put together a slideshow of his Harry Whittington collection. The covers are wild and vivid. Whittington has been called the king of the paperback, and when you see this impressive show, you will know why. Check the show out Here. I have about seven of these titles--boy, would I be willing to trade for Crider's lot.
There is also a slideshow of John D's paperbacks Here.