MLA

McClintock, Walter, 1870-1949. 903. [Traveling Tipi of Walter McClintock. Onesta, Nitana and Their Daughter, Yellow Mink.]. Box 68, folder 3710. undated. https://collections.library.yale.edu/catalog/2009887.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 68, folder 3710"])(undated)[903. [Traveling Tipi of Walter McClintock. Onesta, Nitana and Their Daughter, Yellow Mink.]]. https://collections.library.yale.edu/catalog/2009887.