Draper, Ernest Gallaudet, 1885-1954. To Chairman Eccles, Box 32, Folder 21, Item 4, Marriner S. Eccles Papers. https://fraser.stlouisfed.org/archival/1343/item/466124, accessed on May 16, 2022.
Regarding the number of corporations in active business.
- Banks and banking
- Board of Governors of the Federal Reserve System (U.S.), 1935-
- Federal Reserve Board, 1914-1935