United States. Department of the Treasury. Letter to Mr. Martin, Box 16, Folder 2, William McChesney Martin, Jr., Papers. https://fraser.stlouisfed.org/content/?item_id=456741&filepath=/files/docs/historical/martin/16_02_19510326b.pdf, accessed on May 22, 2018.
Regarding Szymczak vote to convert June and December 1967-72s to new 2 3/4% nonmarketable bonds. From fiscal assistant Secretary E.F.B.
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