Martin, William McChesney. "Desk Calendar, April 1968, Box 57, Folder 4" in Calendar of William McChesney Martin, Jr. (April 1968). https://fraser.stlouisfed.org/title/5195/item/456972, accessed on May 2, 2024.
Martin, William McChesney. "Desk Calendar, April 1968, Box 57, Folder 4" in Calendar of William McChesney Martin, Jr. (April 1968). https://fraser.stlouisfed.org/title/5195/item/456972, accessed on May 2, 2024.