Federal Reserve Bank of Dallas. "[Specimen Checks to Assist in Testing of Sorting Program]," District Notices (Federal Reserve Bank of Dallas) (June 10, 1963). https://fraser.stlouisfed.org/title/5569/item/551818, accessed on April 19, 2024.
Federal Reserve Bank of Dallas. "[Specimen Checks to Assist in Testing of Sorting Program]," District Notices (Federal Reserve Bank of Dallas) (June 10, 1963). https://fraser.stlouisfed.org/title/5569/item/551818, accessed on April 19, 2024.