Bruce C. Cooper: Riding the Transcontinental Rails: Overland Travel on the Pacific Railroad 1865–1881, s. 11. Philadelphia: Polyglot Press. ISBN 1-4115-9993-4Teoksen verkkoversio.
Driving the Last Spike at Promontary, 1869. California Historical Society Quarterly, 1957, XXXVI. vsk. Artikkelin verkkoversio.
Reports of Explorations and Surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean. US Government Printing Office, 1855-1861. Teoksen verkkoversio.
Bruce C. Cooper: Riding the Transcontinental Rails: Overland Travel on the Pacific Railroad 1865–1881, s. 11. Philadelphia: Polyglot Press. ISBN 1-4115-9993-4Teoksen verkkoversio.