Source: Carl Stange. Das Gefangenlager in Göttingen. Göttingen, Germany: Verlag Louis Hofer, 1915. Armed Services Records Box-54, Folder: “German Language Publications, ca. 1918,” Kautz Family YMCA Archives, University of Minnesota, Minneapolis, MN.
Pursuit of an "Unparalleled Opportunity": The American YMCA and Prisoner of War Diplomacy among the Central Power Nations during World War I, 1914-1923