Cite

R. H. Pratt, 6 items

MLA

Pratt, Richard Henry, 1840-1924. R. H. Pratt, 6 items. Box 24, folder 755. n.d.. https://collections.library.yale.edu/catalog/33320506.

APA, 6th edition

Pratt, Richard Henry, 1840-1924. (["Box 24, folder 755"])(n.d.)[R. H. Pratt, 6 items]. https://collections.library.yale.edu/catalog/33320506.