The fonds comprises records of Trinity Church, Clydach, including minute books of church committee meetings, 1941-1992, members' contribution books, 1944-1975, account books, 1916-1970, cash books, 1916-1949, a Ministry Collection book, 1916-1939, papers and correspondence, 1919-1998, and photographs of ministers and elders. A further account book, 1976-2000, was received, May 2009.