Biddle, Francis, 1886-1968 and Eccles, Marriner S. (Marriner Stoddard), 1890-1977. Letter to Marriner [Eccles], Box 33, Folder 3, Item 1, Marriner S. Eccles Papers. https://fraser.stlouisfed.org/archival/1343/item/465900, accessed on June 23, 2025.