Federal Reserve Bank of Dallas. "Noncash Services, Circular No. 81-25," District Notices (Federal Reserve Bank of Dallas) (January 30, 1981). https://fraser.stlouisfed.org/title/5569/item/541206, accessed on March 30, 2020.
Bulletin 7 and Bulletin 9 Related. Noncash Services for Collection of Municipal and Corporate Coupons Discontinues 3-1-81 Unless Auto Charge Agreement Executed.