Board of Governors of the Federal Reserve System (U.S.). Division of Research and Statistics and Eccles, Marriner S. (Marriner Stoddard), 1890-1977. Memorandum to Mr. Upham, Box 4, Folder 2, Item 4, Marriner S. Eccles Papers. https://fraser.stlouisfed.org/archival/1343/item/464351, accessed on June 14, 2025.