Cite

"Pittsburgh"

MLA

Clapp, Frederick Mortimer, 1879-1969. "Pittsburgh". Box 29. 1926-1931. https://collections.library.yale.edu/catalog/16593896.

APA, 6th edition

Clapp, Frederick Mortimer, 1879-1969. (["Box 29"])(1926-1931)["Pittsburgh"]. https://collections.library.yale.edu/catalog/16593896.