Economic History : Trade Trailblazer: The National Road Linked Communities and Helped Expand America's Western Frontier
Gerena, Charles. "Economic History : Trade Trailblazer: The National Road Linked Communities and Helped Expand America's Western Frontier," in Federal Reserve Bank of Richmond. "Fall 2003, Volume 7, Number 4," Econ Focus (Federal Reserve Bank of Richmond) (Fall 2003) : 38-41. https://fraser.stlouisfed.org/title/3941/item/476923/toc/503774 , accessed on March 24, 2023.