The Oregon Historic District Society was formed in 1973. The constitution for the society reads, in part, "To create a sense of community; to help make neighborhood life secure and comfortable; to establish an atmosphere in which to live, work and recreate ourselves." This collection contains administrative paperwork, photograph slides, compact discs, DVDs, newspaper articles, tour pamphlets, maps, licenses, permits, zoning issues, parking issues and neighborhood rehabilitation plans.

Consists of blueprints, drawings, business records, and photographs from the Albert Pretzinger Architectural Firm located in Dayton, Ohio. Collection provides examples of architectural styles of residences, schools, churches, hospitals, and commercial buildings in the Dayton area designed by Pretzinger and his associates from 1890-1950. The business records include correspondence, working papers, memos, and financial records.