Cite

Bennett, Gwendolyn B., 5 autograph letters and 1 typed letter, signed, to Harold Jackman

MLA

Bennett, Gwendolyn B., 5 Autograph Letters and 1 Typed Letter, Signed, to Harold Jackman. 1925. https://collections.library.yale.edu/catalog/16867529.

APA, 6th edition

Bennett, Gwendolyn B., 5 autograph letters and 1 typed letter, signed, to Harold Jackman. (1925). https://collections.library.yale.edu/catalog/16867529.