WishBookWeb.com has Christmas catalogs dating back to 1933. The online collection of scans includes catalogs from Sears, J.C. Penny’s, F.A.O. Schwarz, and others. The interface is a little clunky and you have to scroll around a lot, but once you find the Smurfs, Star Wars, He-Man and G.I. Joe toys for sale, you’ll forget all about that.
I would spend hours with these monstrous tomes every Christmas.