Sproul, Allan, 1896-1978. Memo, Allan Sproul to Mr. Roelse, . https://fraser.stlouisfed.org/archival/1174/item/3415, accessed on April 19, 2024.
Sproul, Allan, 1896-1978. Memo, Allan Sproul to Mr. Roelse, . https://fraser.stlouisfed.org/archival/1174/item/3415, accessed on April 19, 2024.