George Winslow, "New York Gold Market" in The Encyclopedia of New York City (2d ed.: eds. Kenneth T. Jackson, Lisa Keller & Nancy Flood).
John Steele Gordon, An Empire of Wealth: The Epic History of American Economic Power (2004; Harper Perennial ed. 2005), pp. 197–99.
Leonard Schlup, "Colgate, James Boorman" in Historical Dictionary of the Gilded Age (eds. Leonard C. Schlup & James Gilbert Ryan: M.E. Sharpe, 2003), p. 100.
