Tom Thumb (locomotive) (English Wikipedia)

"Peter Cooper's Locomotive". The Manufacturer and Builder. IV (2): 32. February 1872. Retrieved September 18, 2015.
Dudley, P.H. (February 1, 1886). "The Inception and Progress of Railways". Transactions of the New York Academy of Sciences: 142. Retrieved September 18, 2015.
Reizenstein, Milton (1897). "II – Beginning of Construction, Baltimore to Harper's Ferry (1828–1834)". In Adams, Herbert B. (ed.). The Economic History of the Baltimore and Ohio Railroad 1827–1853. Johns Hopkins University Studies in Historical and Political Science. Baltimore: Johns Hopkins Press. p. 299. Retrieved September 18, 2015.
Hughes, Thomas (1886). "VII – The 'Tom Thumb'". Life and Times of Peter Cooper. London: MacMillan and Co. p. 100. Retrieved September 18, 2015.

borail.org

Baltimore and Ohio Railroad Museum, Baltimore, MD. "History of the Museum." Accessed 2013-04-18.
B&O Railroad Museum. "Collections: Tom Thumb." Accessed 2022-07-24.

"1830 – The Iron Horse Wins". Federal Highway Administration. Retrieved May 20, 2011.

Maryland Historical Society, Baltimore, MD (2000). "The Fair of the Iron Horse." Accessed 2013-04-18.

"First locomotive built in America". Railway Age. Simmons-Boardman Publishing: 58. September 2006. ISSN 0033-8826.