Germany on the Volga 1924 - 1941

This map is in German, and the link leads to a good brief overview of the German Experience in Russia pertaining to the Volga. It also explains Stalin's reasoning for the brutal treatment of Crimean Tatars and Chechens.

http://strangemaps.wordpress.com/2007/07/16/149-the-volga-german-assr-1924-1941/