The Sarah Arny Holmes Papers include correspondence, biographical information, and photographs. The correspondence includes twenty letters written between 1924 and 1928 addressed to her family in Montclair, New Jersey. The letters discuss her life as a student at Mount Holyoke College. They include descriptions of traditions such as Big Sisters, the hazing of freshmen, Mountain Day celebrations, Junior Prom, and Faculty Show. The letters also describe lectures, trips off campus, parties, picnics, and conferences with faculty members. The biographical information includes a wedding announcement and an "at home" card dating from 1935. The two photographs in the collection include one from her senior year in high school, circa 1924, and one from her senior year at Mount Holyoke College, 1928.

This collection is organized into three series:

• Correspondence, Papers
• Biographical Information
• Photographs