Federal Reserve Bank of Dallas. "Transit Operations, [Circular No. 20-3]," District Notices (Federal Reserve Bank of Dallas) (February 18, 1920). https://fraser.stlouisfed.org/title/5569/item/547765, accessed on May 11, 2024.
Federal Reserve Bank of Dallas. "Transit Operations, [Circular No. 20-3]," District Notices (Federal Reserve Bank of Dallas) (February 18, 1920). https://fraser.stlouisfed.org/title/5569/item/547765, accessed on May 11, 2024.