APA (7th ed.) Citation

Jackson, W. H. (1951). Pony express route April 3, 1860- October 24, 1861. Union Pacific Railroad.

Chicago Style (17th ed.) Citation

Jackson, William Henry. Pony Express Route April 3, 1860- October 24, 1861. [Omaha?]: Union Pacific Railroad, 1951.

MLA (9th ed.) Citation

Jackson, William Henry. Pony Express Route April 3, 1860- October 24, 1861. Union Pacific Railroad, 1951.