Cite

4. [Walter McClintock and Another man Tightening Packs on a Horse on a Lake Shore.]

MLA

McClintock, Walter, 1870-1949. 4. [Walter McClintock and Another man Tightening Packs on a Horse on a Lake Shore.]. Box 70, folder 3867. 1905 1941. https://collections.library.yale.edu/catalog/2010896.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 70, folder 3867"])(1905 1941)[4. [Walter McClintock and Another man Tightening Packs on a Horse on a Lake Shore.]]. https://collections.library.yale.edu/catalog/2010896.