Federal Reserve Bank of Minneapolis. "Annual Report, 1970," Annual Report of the Federal Reserve Bank of Minneapolis (as of December 31, 1970). https://fraser.stlouisfed.org/title/473/item/18297, accessed on March 29, 2024.
Federal Reserve Bank of Minneapolis. "Annual Report, 1970," Annual Report of the Federal Reserve Bank of Minneapolis (as of December 31, 1970). https://fraser.stlouisfed.org/title/473/item/18297, accessed on March 29, 2024.