Notes and research files of James K. Polk used for writing his master's thesis, Pensacola Commerce and Industry, 1821-1860. Topics include railroads, slavery, brickmaking, sawmills, shipping, John Innerarity, Joseph Forsyth, Arcadia Mill, descriptions of Pensacola in the 1800s, and notes on businesses and trades in Pensacola, 1820-1860, and excerpts from the Pensacola Gazette.