Cite

F6187. Distant Rockies. Snow on Prairies.

MLA

McClintock, Walter, 1870-1949. F6187. Distant Rockies. Snow on Prairies.. Box 138, folder 6473. 1906 May. https://collections.library.yale.edu/catalog/10452159.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 138, folder 6473"])(1906 May)[F6187. Distant Rockies. Snow on Prairies.]. https://collections.library.yale.edu/catalog/10452159.