Cite

SF-12. Forest Trail. Two White Pines.

MLA

McClintock, Walter, 1870-1949. SF-12. Forest Trail. Two White Pines.. Box 145, folder 7454. undated. https://collections.library.yale.edu/catalog/10453598.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 145, folder 7454"])(undated)[SF-12. Forest Trail. Two White Pines.]. https://collections.library.yale.edu/catalog/10453598.