The collection consists of primarily textual materials relating to the Church Union movement and the organizations involved, including the Joint Committee on Church Union. There appears to be a mix of original documents and various published and copied items.

Contents include: Basis of Union documents from the Presbyterian Church (1905-1908) and Methodist Church (1909); records of proceedings, minutes, and publications by and relating to the Joint Committee on Church Union and its Subcommittees; documents relating to proposed legislation (1922-1924), the Act Incorporating the United Church of Canada, House of Commons debates on the topic, and associated Saskatchewan legislation (1924); publications and articles relating to the anti-union movement and the legal issues resulting from the division of the Presbyterian Church; copies of information regarding the voting returns on Union from across Canada (1925-1926); maps showing communities with local union churches; and a poster published by the Union Committee of the Presbyterian Church (1924).