Sproul, Allan, 1896-1978. Letter to Marriner S. Eccles, Box 12, Folder 6, Item 15, Marriner S. Eccles Papers. https://fraser.stlouisfed.org/scribd/?item_id=461873&filepath=/files/docs/historical/eccles/012_06_0015.pdf, accessed on November 18, 2017.
Regarding hierarchy of the war financing organization.
- Banks and banking
- Board of Governors of the Federal Reserve System (U.S.), 1935-
- Federal Reserve Board, 1914-1935