MLA

Stenzel, Franz (1906-1998). "At Stow Mass. July 25, 1884 fin 5.30 p.m. sultry & cloudy." Watercolor, 27.7 x 46.6 cm.. Box 4, folder 72. 1884 Jul 25. https://collections.library.yale.edu/catalog/10869230.

APA, 6th edition

Stenzel, Franz (1906-1998). (["Box 4, folder 72"])(1884 Jul 25)["At Stow Mass. July 25, 1884 fin 5.30 p.m. sultry & cloudy." Watercolor, 27.7 x 46.6 cm.]. https://collections.library.yale.edu/catalog/10869230.