Eastern Germany, distribution of population.
1 : 2400000 Covers Poland, East Prussia, and border areas of Germany and Czechoslovakia.
"From: Atlas des deutschen Lebensraumes in Mitteleuropa, plate 27. Data as of 1930-1934."
"No. A-6287." United States. Office of Strategic Services. Research and Analysis Branch. [Washington, D.C.] : R & A, OSS