Section from sheet II, Grand Trunk Pacific Railway map of Rocky Mountains. Three mile map showing reconnaissance by Engineers R.W. Jones, D.D. Sprague & A.S. Going.

Chicago citation style
Section from sheet II, Grand Trunk Pacific Railway map of Rocky Mountains. Three mile map showing reconnaissance by Engineers R.W. Jones, D.D. Sprague & A.S. Going.. 1906. Retrieved from the Digital Public Library of America, http://collections.lib.uwm.edu/cdm/ref/collection/agdm/id/16859. (Accessed December 10, 2019.)
APA citation style
(1906) Section from sheet II, Grand Trunk Pacific Railway map of Rocky Mountains. Three mile map showing reconnaissance by Engineers R.W. Jones, D.D. Sprague & A.S. Going.. Retrieved from the Digital Public Library of America, http://collections.lib.uwm.edu/cdm/ref/collection/agdm/id/16859
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.lib.uwm.edu/cdm/ref/collection/agdm/id/16859>.
Note: These citations are programmatically generated and may be incomplete.