Letter to Marriner Eccles
The Marriner S. Eccles Document Collection
Includes memorandum "Proposed Special Security for the Purpose of Absorbing Idle Business Balances.
Bell, Daniel W. and United States. Dept. of the Treasury, 1942, Letter to Marriner Eccles, from The Marriner S. Eccles Document Collection, accessed Sep 18, 2014 from FRASER, http://fraser.stlouisfed.org/docs/historical/eccles/010_05_0003.pdf