MLA

Johnston, William Walker Whitehall, 1835-1886. Album Page 37. Recto: Copy photograph of a painting of two women in profile. Box 1, folder 35. circa 1860. https://collections.library.yale.edu/catalog/16657587.

APA, 6th edition

Johnston, William Walker Whitehall, 1835-1886. (["Box 1, folder 35"])(circa 1860)[Album Page 37. Recto: Copy photograph of a painting of two women in profile]. https://collections.library.yale.edu/catalog/16657587.