The Harrison Potter papers consist of concert programs, concert announcements and reviews, memorabilia, correspondence, concert plans, biographical information, and photographs. The collection primarily consists of concert programs and reviews documenting his concert career between 1900 and 1974. The collection includes a few items of a more personal nature, including two letters to the editor documenting some personal opinions and a letter, in French, from a family friend inquiring about a mutual friend and extending an invitation to a son's wedding. Also of particular note is a scrapbook containing programs, postcards, and newspaper clippings relating to the 1910-1911 opera season in New York City. The concert programs in the collection consist of approximately 190 programs for recitals and concerts in which he performed as accompanist or soloist, including programs for several series of lectures on music given by Marion Bauer for which he provided "illustration," and several programs for concerts in which he performed Bauer's work. The photographs consist of a photographic postcard, possibly of him, in a general store, circa 1910s; a signed photograph from "Solomon;" and formal portraits of Harrison Potter alone and with a piano student.

This collection is organized into seven series:

• Concert Programs
• Concert Announcements and Reviews
• Memorabilia
• Correspondence
• Concert Plans
• Biographical Information
• Photographs