Federal Reserve Bank of Chicago. "[Copy of Revised Treasury Circular No. 21, "Regulations Governing the Indorsement and Payment of Checks Drawn on the Treasurer of the United States"], Circular No. 1276" in Federal Reserve Bank of Chicago Bulletins and Circular Letters
(October 10, 1946).
https://fraser.stlouisfed.org/title/7180/item/658456, accessed on May 11, 2026.