Upper Darby, Pennsylvania
MLA
H. D. (Hilda Doolittle), 1886-1961. Upper Darby, Pennsylvania. Box 55, folder 1399. 1907, n.d.. https://collections.library.yale.edu/catalog/2013606.
APA, 6th edition
H. D. (Hilda Doolittle), 1886-1961. (["Box 55, folder 1399"])(1907, n.d.)[Upper Darby, Pennsylvania]. https://collections.library.yale.edu/catalog/2013606.