Cite

F5x7-51. Snow-covered Mountains.

MLA

McClintock, Walter, 1870-1949. F5x7-51. Snow-covered Mountains.. Box 148, folder 7893. undated. https://collections.library.yale.edu/catalog/10453539.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 148, folder 7893"])(undated)[F5x7-51. Snow-covered Mountains.]. https://collections.library.yale.edu/catalog/10453539.