Eccles, Marriner S. (Marriner Stoddard), 1890-1977 and Sproul, Allan, 1896-1978. Letter to Allan Sproul, Box 50, Folder 3, Item 8, Marriner S. Eccles Papers. https://fraser.stlouisfed.org/archival/1343/item/467264, accessed on March 17, 2025.