ACE Science Fiction Covers Archive

Here's a cool archive of Ace SF covers from the early fifties to the mid-seventies. Pretty cool.

http://people.uncw.edu/smithms/ACE.html

Mass-markets...

Aside from being wonderful, tactical air-weapons when thrown with the proper aim, mass market paperbacks are some of the finest, cheapest examples of the printed word. Here's a cool little essay about the history of these books and the Library of Congress.

Here's the link: http://aic.stanford.edu/sg/bpg/annual/v17/bp17-08.html

And here's another link for an archive of mass-market paperback covers:

http://www.bookscans.com/