If you buy the new 3-disc Oz set, the third disc comes with all the previous Oz silent movies done before the 1939 version.

The first one was the 1910 version you speak of. Also on there are 2 Oz silent movies from 1914, a silent movie from 1925 with Oliver Hardy in it and a cartoon from 1933. So far I've only watched the one from 1910.