Cite

[Map of Canada north of 60⁰].

MLA

[Map of Canada North of 60⁰]. Dept. of the Interior?, 1910. https://collections.library.yale.edu/catalog/15827312.

APA, 6th edition

[Map of Canada north of 60⁰]. (1910). [Maps]. Dept. of the Interior?, https://collections.library.yale.edu/catalog/15827312.