Helfferich, D. L. Letter to Marriner S. Eccles, Box 70, Folder 8, Item 7, Marriner S. Eccles Papers. https://fraser.stlouisfed.org/scribd/?item_id=459530&filepath=/files/docs/historical/eccles/070_08_0007.pdf&start_page=1, accessed on October 19, 2017.
Letter from D. I. Helfferich confirming receipt of copy of Eccles' testimony before Subcommittee on Monetary, Credit, and Fiscal Policies and expressing general agreement with Eccles' statements.
- Banks and banking
- Board of Governors of the Federal Reserve System (U.S.), 1935-
- Federal Reserve Board, 1914-1935