New railroad map of the United States and the Dominion of Canada, showing the Chicago, Rock Island and Pacific R.'y, the Great Overland route, and short line to the West and Southwest / by Emil Heubach, Designer and Engraver.
MLA
Heubach, Emil. New Railroad Map of the United States and the Dominion of Canada, Showing the Chicago, Rock Island and Pacific R.'y, the Great Overland Route, and Short Line to the West and Southwest / by Emil Heubach, Designer and Engraver. E. Heubach, 1879. https://collections.library.yale.edu/catalog/15603755.
APA, 6th edition
Heubach, E. (1879). New railroad map of the United States and the Dominion of Canada, showing the Chicago, Rock Island and Pacific R.'y, the Great Overland route, and short line to the West and Southwest / by Emil Heubach, Designer and Engraver. [Maps]. E. Heubach, https://collections.library.yale.edu/catalog/15603755.
