The Guilbert Campbell Braddock collection consists of approximately 750 items and are dated from 1884-1983. The majority of the papers are dated from the 1930s and 1940s. The bulk of the collection consists of addresses, annual reports, articles, biographical information, correspondence, printed materials, obituaries, and issues of newsletters entitled “The Silent Churchman.”

The collection of annual reports are mostly from the Pennsylvania Diocesan Commission on Church Work Among Deaf-Mutes.

One can also find many articles about the ordainment of the Deaf clergy and also about their work in the Deaf community. There are several biographical manuscripts and notes about the work of hearing clergy including Utten Ellis Read, Frank Read, and Francis Joseph Clerc, the son of Laurent Clerc. Printed materials include publications from various church groups, deaf associations and schools. The Guilbert Campbell Braddock collection is arranged alphabetically by subject. It forms part of the original collection donated by Rev. Otto Berg on October 19, 1988.