MLA

Simpson, Randolph Linsly, 1927-1992. International Postcard Co., New York, NY "No. 943"; "Stripes but no stars, Asheville, N.C.;" Men in prisoners stripes with lunch pails line up to left of railroad tracks; tools at right; guards in background. Postcard in color. Box 25. circa 1925. https://collections.library.yale.edu/catalog/16172724.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 25"])(circa 1925)[International Postcard Co., New York, NY "No. 943"; "Stripes but no stars, Asheville, N.C.;" Men in prisoners stripes with lunch pails line up to left of railroad tracks; tools at right; guards in background. Postcard in color]. https://collections.library.yale.edu/catalog/16172724.