Printed copy
MLA
Carson, Rachel, 1907-1964. Printed copy. Box 101, folder 1895. n.d.. https://collections.library.yale.edu/catalog/17145203.
APA, 6th edition
Carson, Rachel, 1907-1964. (["Box 101, folder 1895"])(n.d.)[Printed copy]. https://collections.library.yale.edu/catalog/17145203.