Cite

SF-270. Pink Lady Slipper.

MLA

McClintock, Walter, 1870-1949. SF-270. Pink Lady Slipper.. Box 146, folder 7710. undated. https://collections.library.yale.edu/catalog/10453855.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 146, folder 7710"])(undated)[SF-270. Pink Lady Slipper.]. https://collections.library.yale.edu/catalog/10453855.