As a fan of Dell mapbacks, I'm enjoying prowls through the 1940s-70s cover art in the Vintage Paperback Index at Bowling Green State University's Browne Popular Culture Library. Mystery authors represented include Lawrence Goldtree Blochman, Robert M. Coates, George Harmon Coxe, Mignon G. Eberhart, A. A. Fair (aka Erle Stanley Gardner), Leslie Ford, Brett Halliday, Dashiell Hammett, Geoffrey Homes, Baynard Kendrick, Helen McCloy, Zelda Popkin, Mary Roberts Rinehart, Rex Stout, and Phoebe Atwood Taylor. It's also not without its pleasant surprises such as the inclusion of Lloyd C. Douglas (The Robe, Magnificent Obsession) for Doctor Hudson's Secret Journal and C. W. Grafton (father of Sue) for The Rope Began to Hang the Butcher and The Rat Began to Gnaw the Rope. In addition, there are items for western fans (The Law at Randado by Elmore Leonard) and sci-fi aficionados (Rocket to the Morgue by Anthony Boucher; Invasion from Mars ed. Orson Welles).