Alexander, Edwin P. (1967). (New York: Bonanza Books). Atterbury-Bakalar Air Museum (2000), . Retrieved February 21, 2005. Martinez, Peter (1960). President and Fellows of Harvard College (2004), . Retrieved February 23, 2005. Rensselaer Polytechnic Institute (2005). . Retrieved February 22, 2005. Thomas, William G. "The Countryside Transformed: The Eastern Shore of Virginia, the Pennsylvania Railroad and the Creation of the Modern Landscape" July 31, 2007. White, John H., Jr. (Spring (season) 1986). "America's most noteworthy railroaders." , Railway and Locomotive Historical Society, , pp. 9–15.