Cite

Map of the Dominion of Canada / R.E. Young, D.L.S., Chief Geographer.

MLA

Young, R. E. Map of the Dominion of Canada / R.E. Young, D.L.S., Chief Geographer. Dept. of the Interior, 1910. https://collections.library.yale.edu/catalog/15827315.

APA, 6th edition

Young, R. E. (1910). Map of the Dominion of Canada / R.E. Young, D.L.S., Chief Geographer. [Maps]. Dept. of the Interior, https://collections.library.yale.edu/catalog/15827315.