Cross Sections of the Fourth Federal Reserve District III. Pittsburgh, Youngstown and the Upper Ohio Valley Nine Economic Areas including 41 Counties
Federal Reserve Bank of Cleveland. "Cross Sections of the Fourth Federal Reserve District III. Pittsburgh, Youngstown and the Upper Ohio Valley Nine Economic Areas including 41 Counties," in Federal Reserve Bank of Cleveland. "May 1957," Economic Review (Federal Reserve Bank of Cleveland) (May 1957) : 1-23. https://fraser.stlouisfed.org/title/1328/item/4081/toc/319744 , accessed on March 28, 2024.