Bistor, James E. , Hitt, Francis Guy , Seibert, Herbert D. , Shields, Murray and Thurston, Elliott. Letter to Marriner S. Eccles, Box 80, Folder 16, Item 4, Marriner S. Eccles Papers. https://fraser.stlouisfed.org/archival/1343/item/467110, accessed on March 17, 2025.