I've also spotted a few Brett Halliday westerns (sadly, no Michael Shayne mysteries), a few Peter Bowen Yellowstone Kelly titles, a few Mr. Moto titles by John P. Marquand, a bunch of Susan Dunlap titles. Not nearly as comprehensive (by an order of magnitude or more) as the freebie-fest, but I did find one title I wanted that I had somehow missed back then, and was pleased to buy it. Somehow I don't mind giving Open Road some money

.