Cite

The Weary Blues jacket design by Covarrubias [small version, proof only]

MLA

Hughes, Langston, 1902-1967. The Weary Blues jacket design by Covarrubias [small version, proof only]. Box 585, folder 14052. n.d.. https://collections.library.yale.edu/catalog/16729389.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 585, folder 14052"])(n.d.)[The Weary Blues jacket design by Covarrubias [small version, proof only]]. https://collections.library.yale.edu/catalog/16729389.