Cite

A2 Ab3 1 - A2 Am7 2

MLA

Oastler, Frank Richard, 1871-1936. A2 Ab3 1 - A2 Am7 2. Box 81, folder 85. 1927-1935, undated. https://collections.library.yale.edu/catalog/2040509.

APA, 6th edition

Oastler, Frank Richard, 1871-1936. (["Box 81, folder 85"])(1927-1935, undated)[A2 Ab3 1 - A2 Am7 2]. https://collections.library.yale.edu/catalog/2040509.