Generalplan Ost
A major document which enabled historians to accurately reconstruct the "Generalplan Ost" was a memorandum released on April 27, 1942, by , director of the NSDAP Office of Racial Policy, entitled "Opinion and thoughts on the master plan for the East of the Reichsführer SS". Wetzel's memorandum was a broad elaboration of the "Generalplan Ost" proposal. It came to light only in 1957.