Cite

Map of Yoho Park [cartographic material].

MLA

of the Interior, Canada. Dept. Map of Yoho Park [Cartographic Material]. Dept. of the Interior, 1921. https://collections.library.yale.edu/catalog/15827355.

APA, 6th edition

of the Interior, C. D. (1921). Map of Yoho Park [cartographic material]. [Maps]. Dept. of the Interior, https://collections.library.yale.edu/catalog/15827355.