Federal Reserve Bank of Atlanta. "An Index of Coal Production in Alabama and Tennessee," in Federal Reserve Bank of Atlanta. "November 30, 1940, Volume 25, Number 11," Economic Review (Federal Reserve Bank of Atlanta) (November 30, 1940) : 5-6. https://fraser.stlouisfed.org/title/884/item/34770/toc/318594 , accessed on May 5, 2024.