Cite

Autograph letter, annotated "Echota"

MLA

Kilpatrick, Jack Frederick (1915-1967). Autograph letter, annotated "Echota". Box 1, folder 77. 1933 November 19. https://collections.library.yale.edu/catalog/15492078.

APA, 6th edition

Kilpatrick, Jack Frederick (1915-1967). (["Box 1, folder 77"])(1933 November 19)[Autograph letter, annotated "Echota"]. https://collections.library.yale.edu/catalog/15492078.