Cite

Autograph note, signed

MLA

Speck, William A. (William Alfred), 1864-1928. Autograph note, signed. Box 10, folder 306. n.d.. https://collections.library.yale.edu/catalog/2005348.

APA, 6th edition

Speck, William A. (William Alfred), 1864-1928. (["Box 10, folder 306"])(n.d.)[Autograph note, signed]. https://collections.library.yale.edu/catalog/2005348.