Minutes of the Discipline Committee, which was responsible for enforcing rules against cheating and other violations of college rules.

Documents related to the founding and administration of the Union College. Materials related to the various property purchases in New York, the construction of College buildings, College trustee meetings and decisions, legal information related to several lawsuits over College lotteries in the 1840s, financial records, student organizations, curriculum and faculty committees. The bulk of the materials date from the 19th century.

Correspondence, reports, and publicity relating to the establishment and maintenance of the Dome Island Memorial Sanctuary.

Original blueprints, memoranda, publications, reports, and data created by Donald Warner and other engineers while producing the GE Type 1-A jet engine.

The Edith Pilcher papers measure 5.13 cubic feet and date from 1790-2007, with the bulk of the collection falling between 1980-2004. The papers reflect her work as a freelance writer outside duties as collection development chair of the Adirondack Research Library. The collection consists of research materials, correspondence, notes, photographs, and drafts of each of her four books on Adirondack History.

Essays and addresses by Edward Payson White on topics including Union College, the English language, and African-Americans. Also includes several photographs.

Notebook containing "A Synopsis of Lichens, especially English, but also some American" (in Latin) and minutes of the short-lived Union College social group Symsmokium Speciale.

The Edwin W. Rice, Jr. papers include his writings and speeches, correspondence, photographs, and ephemera. Material documents his work in electrical engineering (culminating in his appointment as president of the General Electric Company) and his service as a trustee of Union College.

Bulletins of the Electric Power Club and National Electrical Manufacturers Association (NEMA) materials.

Letters from former Union College President Eliphalet Nott Potter to Judge James M. Smith written while Potter was President of Hobart College.

Black and white postcards of the Union College campus collected by Elizabeth L. Taylor, daughter of Civil Engineering Professor Warren Crosby Taylor. They include a particularly rich representation of early campus fraternity houses.

Organ recital programs featuring Union College Music Director Elmer A. Tidmarsh collected by John W. Van Laak.

The Engineering, Science, and Management War Training (ESMWT) Program records include enrollment reports, course outlines, class experiments, certificates awarded, budgets and accounts, statistics, correspondence, and other materials relating to the program.

Account book maintained by Ernest A. Lewald (Class of 1885) while a student at Union College.

The Ernst F. W. Alexanderson Papers document his pioneering electrical engineering work in radio and television at the General Electric Company. Files include reports, correspondence, notes, patent information, photographs, publications, and ephemera.

The Ernst J. Berg Papers document Berg's electrical engineering research and teaching at Union College, the University of Illinois, and General Electric. The collection primarily consists of correspondence, technical reports, technical notes, lectures, and writings.

Records pertaining to Erwin Miller's work with the Adirondack Mountain Club's Conservation Committee.

The Facilities Services Records contain construction and maintenance records created by Facilities Services and its predecessors (Campus Operations and Physical Plant), including drawings, reports, correspondence, proposals, and photographs.