Cite

[Herbert Gilchrist] etching

MLA

Whitman, Walt, 1819-1892. [Herbert Gilchrist] etching. Box 4, folder 187. n.d.. https://collections.library.yale.edu/catalog/2054478.

APA, 6th edition

Whitman, Walt, 1819-1892. (["Box 4, folder 187"])(n.d.)[[Herbert Gilchrist] etching]. https://collections.library.yale.edu/catalog/2054478.