Federal Reserve Bank of Dallas. "Regulation Z - Truth in Lending, Circular No. 80-185," District Notices (Federal Reserve Bank of Dallas) (October 1, 1980). https://fraser.stlouisfed.org/content/?item_id=541121&filepath=/files/docs/historical/frbdal/circulars/frbdallas_circ_19801001_no80-185.pdf, accessed on July 15, 2018.
Official Staff Interpretation FC-0172 of Regulation Z, Effective 9-23-80. Regarding Disclosures for Renegotiable Rate Mortgages (RRMs).