Cite

JFW sketchbook 8 1/4" x 10 7/8"

MLA

Weir, John F. (John Ferguson), 1841-1926. JFW sketchbook 8 1/4" x 10 7/8". Box 3, folder 58. undated. https://collections.library.yale.edu/catalog/10021217.

APA, 6th edition

Weir, John F. (John Ferguson), 1841-1926. (["Box 3, folder 58"])(undated)[JFW sketchbook 8 1/4" x 10 7/8"]. https://collections.library.yale.edu/catalog/10021217.