Committee on the History of the Federal Reserve System (U.S.). Business Cycle Analysis: Theoretical Contributions : Business Cycles: Literature of Analysis and Explanation: 1939, Entry 176, Box 23, Folder 1, Item 31,
Committee on the History of the Federal Reserve System.
https://fraser.stlouisfed.org/archival/1342/item/457731, accessed on April 11, 2026.