Poor, H. V. (1860). History of the railroads and canals of the United States. J. H. Schultz.
Lua i Stíl Chicago (17ú heag.)Poor, Henry Varnum. History of the Railroads and Canals of the United States. New York: J. H. Schultz, 1860.
Lua MLA (8ú heag.)Poor, Henry Varnum. History of the Railroads and Canals of the United States. J. H. Schultz, 1860.
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