Harry Elmer Barnes, The Beginnings of Modern Civilization, Industry, Commerce, Foreign Trade, Finance, and Banking, 1935, id1762, Box: 1, Item: 2. Emanuel Haldeman-Julius Big Blue Books and Larger Books Collection, SC-EHJB. Special Collections & Archives. https://findingaids.csun.edu/repositories/2/archival_objects/18422 Accessed June 26, 2026.