Federal Reserve Bank of Dallas. "Optional Redemption - 4 Percent Treasury Notes Series A-1961," District Notices (Federal Reserve Bank of Dallas) (April 15, 1959). https://fraser.stlouisfed.org/title/5569/item/551559, accessed on April 19, 2024.
Federal Reserve Bank of Dallas. "Optional Redemption - 4 Percent Treasury Notes Series A-1961," District Notices (Federal Reserve Bank of Dallas) (April 15, 1959). https://fraser.stlouisfed.org/title/5569/item/551559, accessed on April 19, 2024.