Federal Reserve Bank of Minneapolis. Community Affairs Department and Federal Reserve Bank of Minneapolis. "Houghton Michigan : Community of Economic Excellence," in Federal Reserve Bank of Minneapolis. Community Affairs Department and Federal Reserve Bank of Minneapolis. "Ninth District Community, Volume 4, Number 1," Ninth District Community (Federal Reserve Bank of Minneapolis) (January 1989) : 1-3. https://fraser.stlouisfed.org/title/6892/item/628642/toc/636950 , accessed on May 17, 2024.