Spotts, Hitler, 76-7; Alan E. Steinweis, Art, Ideology, and Economics in Nazi Germany: The Reich Chambers of Music, Theater, and the Visual Arts (Chapel Hill, N.C., 1993), 4-6, 34-49, 83-102; Jonathan Petropoulos, Art as Politics in the Third Reich (Chapel Hill, N.C., 1996), 34-8, 64-70.