Federal Reserve Bank of Dallas. "Change in Postal Regulations, Circular No. 73-151," District Notices (Federal Reserve Bank of Dallas) (June 26, 1973). https://fraser.stlouisfed.org/title/5569/item/545119, accessed on April 24, 2024.
Federal Reserve Bank of Dallas. "Change in Postal Regulations, Circular No. 73-151," District Notices (Federal Reserve Bank of Dallas) (June 26, 1973). https://fraser.stlouisfed.org/title/5569/item/545119, accessed on April 24, 2024.