Federal Reserve Bank of Dallas. "Chain-Letter Scheme Using Savings Bonds," District Notices (Federal Reserve Bank of Dallas) (May 7, 1958). https://fraser.stlouisfed.org/title/5569/item/551345, accessed on April 18, 2024.
Federal Reserve Bank of Dallas. "Chain-Letter Scheme Using Savings Bonds," District Notices (Federal Reserve Bank of Dallas) (May 7, 1958). https://fraser.stlouisfed.org/title/5569/item/551345, accessed on April 18, 2024.