Several different sites have featured stories on this very cool look at rare test footage and artwork from a 1930’s animated version of John Carter of Mars, from the Danton Burroughs Tarzana Archives. All the links above have some great takes on the project, with Geeks of Doom summing it up this way: “It’s amazing to think that had Clampett and Burroughs’ dream been realized John Carter of Mars would have been the first full-length animated feature produced for the big screen. Could that have changed the course of film history? Would more serious and memorable science-fiction films have been made in Hollywood earlier than the 1950s? The mind reels at the possibilities.” Those looking for more should check out these pieces by Disney historian Jim Korkis from 2003 and earlier this year.