Zeta Psi Fraternity. Eta Chapter (Yale University)

The records consist of minutes of meetings, membership lists, correspondence, constitutions and bylaws, scrapbooks, library records, financial and business records, programs and invitations, articles and news clippings, reports, songbooks, notices, newsletters, and related materials documenting the organization, activities, and operations of various student, faculty, and staff organizations, and other Yale community groups.

The papers include personal and family correspondence, subject files, and photographs relating to the life and career of William Henry Morse. The collection also contains genealogical material relating to Morse family members, particularly Jedidiah Morse, the father of American geography.