Cite

Galley proof, corrected and signed

MLA

Whitman, Walt, 1819-1892. Galley proof, corrected and signed. Box 3, folder 148. n.d.. https://collections.library.yale.edu/catalog/2001538.

APA, 6th edition

Whitman, Walt, 1819-1892. (["Box 3, folder 148"])(n.d.)[Galley proof, corrected and signed]. https://collections.library.yale.edu/catalog/2001538.