Cite

"Time," watercolor and pencil on paper board

MLA

Stieglitz, Alfred, 1864-1946. "Time," watercolor and pencil on paper board. Box 159, folder 2920. n.d.. https://collections.library.yale.edu/catalog/2002430.

APA, 6th edition

Stieglitz, Alfred, 1864-1946. (["Box 159, folder 2920"])(n.d.)["Time," watercolor and pencil on paper board]. https://collections.library.yale.edu/catalog/2002430.