Fonds consists of records, including marriages, 1896-1912, of Grand Bend Methodist Circuit (includes Boston (now Greenway), Grand Bend, Mt. Pleasant Church in McGillivray Township, Salem Church in McGillivray Township, Corbett, Shipka), 1883-1913; records, including baptisms, 1877-1924, marriages, 1897-1924, of Grand Bend Presbyterian Church, 1877-1924; records of Corbett Presbyterian Church, 1888-1925; records, including baptisms, 1912-1969, marriages, 1912-1997, burials, 1914-2002, of Grand Bend Pastoral Charge (includes Grand Bend Methodist Circuit, Grand Bend Presbyterian Church, Grand Bend, Greenway), 1904-2014; records of Greenway United Church (includes Greenway Methodist Church and Corbett Presbyterian Church), 1875-2014; records of Grand Bend United Church (includes Grand Bend Presbyterian Church and Grand Bend Methodist Church), 1877-2014; records of Huron Shores United Church in Grand Bend, 2014-2017.

Fonds consists of records, including marriages, 1900-1914, of Inwood Presbyterian Church (includes St. Andrew's Church in Brooke Township), 1889-1924; Mission band records of St. Andrew's Presbyterian Church, Brooke Township, 1914-1915; records, including baptisms, 1890-1962, of Inwood Pastoral Charge (includes Inwood Presbyterian Church, Inwood, St. Andrew's Church in Brooke Township, Shiloh Church in Enniskillen Township), 1889-2006; records, including baptisms, 1888-1975, marriages, 1914-1950, of Inwood United Church (includes Inwood Presbyterian Church), 1888-1975; women's groups records of Shiloh United Church, Enniskillen Township), 1940-1977; and records, including list of baptisms, marriages, and burials, 1996-2006, of St. Andrew's, Brooke and Enniskillen United Church, 1888-2007.

Fonds consists of annual reports of Nanticoke Methodist Circuit (including Cheapside), 1908-1918; women's groups' records of Nanticoke Methodist Church, 1887-1913; records, including baptisms, 1903-1951, marriages, 1898-1950, burials, 1903-1951, of Nanticoke Pastoral Charge (includes Nanticoke Methodist Circuit, Jennings Church in Walpole Township, Balmoral, Cheapside), 1898-2005; and records of Nanticoke United Church, 1921-2007

Fonds consists of Session minutes, 1897-1920, congregational minutes, 1920, of Oakdale Presbyterian Church; records of Shetland United Church (includes Shetland Methodist Church), 1882-1964; marriage register, 1927-1961, historic roll, 1925-1956, of Oakdale United Church (includes North Dawn Presbytereian Church, Oakdale Presbyterian Church).

Fonds consists of Board of Managers minutes of Oil Springs Presbyterian Pastoral Charge (includes Oil Springs and Oil City), 1889-1920; and copy of marriage register of Oil City United Church (includes Oil City Presbyterian Church), 1897-1947.

Fonds consists of records, including marriages, 1913-1923, of Parker Street Methodist Church, 1873-1923; records, including baptisms, 1949-2008, marriages, 1923-2009, and burials, 1928-2009, of Parker Street United Church, 1906-2009.

Fonds consists of records of Point Edward Methodist Circuit (includes Point Edward Wesleyan Methodist Circuit, Point Edward, London Road West Church in Sarnia Township, Blackwell), 1873-1908; records of Point Edward Methodist Church, 1887-1915; Trustees minutes and financial records of London Road West Methodist Church, Sarnia Township, 1873-1902; Sunday School records of Blackwell Methodist Church, 1886-1923; records, including baptisms, 1937-1992, marriages, 1896-1928, 1945-2009, and burials, 1936-2014, of Point Edward - Blackwell Pastoral Charge (includes Point Edward Methodist Circuit, Point Edward Pastoral Charge, Point Edward, Blackwell), 1896-2014; records of London Road West United Church, Sarnia Township, 1923-1933; records of Blackwell United Church (includes Blackwell Methodist Church), 1894-2014, including baptisms 1993-2012, and membership records 1957-2014; records, including baptisms, 1993-2009, marriages, 1930-1945, 2008, and burials, 1993-2011, of Point Edward United Church (includes Point Edward Methodist Church), 1907-2011.

Fonds consists of records, including marriages, 1896-1913, 1923, of Port Lambton Methodist Circuit (includes Port Lambton, Becher, Sombra, Whitebread), 1891-1923; records, including baptisms, 1899-1952, marriages, 1899-1952, burials, 1899-1952, of Port Lambton Pastoral Charge (includes Port Lambton Methodist Circuit, Sombra Presbyterian Church, Port Lambton, Becher, Whitebread, Sombra), 1899-1982; congregational minutes of Whitebread United Church, 1932-1974; records of Port Lambton United Church, 1954-1974

Fonds consists of circuit register of Sombra Methodist Circuit (includes St. Clair Methodist Episcopal Circuit, St. Clair Methodist Circuit, Sombra, Wilkesport (now Wilksport), 1877-1895; Official Board minutes, 1879-1892, Trustees minutes, 1899-1906, 1914-1916, of Sombra Methodist Church (includes Reynolds Church, Courtright); communion roll of Sombra and Duthill Presbyterian Pastoral Charge (includes Sombra and Duthill), 1870-1915; baptisms, 1878-1891, 1899-1907, 1913-1915, marriages, 1902-1915, of Sombra Presbyterian Church; records, including marriages, 1899-1936, of Sombra Pastoral Charge (includes Wilkesport methodist Circuit (includes Sombra, Wilkesport), Sombra, Wilkesport, Duthill), 1899-1937; Session minutes of Sombra uNited Church (includes Sombra and Duthill Presbyterian Pastoral Charge), 1885-1930

Fonds consists of photocopied sheets of baptismal and marriage records of the St. Clair Indian Mission, including baptisms, 1838-1897, and marriages, 1859, 1891-1894. The photocopies are supplemented by a typewritten transcription of the baptismal records.

This fonds consists of records primarily related to the history and administration of the St. Joseph Health Care Society in London. There are some additional materials related to its responsibilities to facilities in Chatham and Sarnia. The fonds contains correspondence, legal documents, minutes and reports.

Fonds consists of records of St. Luke's United Church, Sarnia, 1970-2016.

Fonds consists of Trustee Board minutes of Petrolia Methodist Church, 1881-1922; records, including baptisms, 1939-1952, marriages, 1939-1960, 1977-1996, and burials, 1939-1948, of St. Paul's United Church, Petrolia (includes Petrolia Methodist Church), 1915-2013.

Fonds consists of records, including baptisms, 1893-1957, marriages, 1896-1984, burials, 1955-1970, of St. Paul's United Church, Sarnia (includes Albert Street Presbyterian Church, St. Paul's Presbyterian Church), 1893-1986

Fonds consists of circuit register of Wanstead Methodist Circuit (includes Wanstead, Uttoxeter, Zion Church, Brooke), 1884-1911

Fonds consists of circuit register of Wardsville Methodist Circuit (includes Wardsville Wesleyan Methodist Circuit, Wardsville, Newbury, Moraviantown, Bothwell, Wesley and Armstrong's Churches in Euphemia Township, Cashmere), 1859-1894; records, including baptisms, 1861-1924, marriages, 1920-1923, burials, 1921-1923, of Wardsville Presbyterian Church (includes Newbury), 1852-1925; records, including baptisms, 1902-2008, marriages, 1897-2009, and burials, 1900-2009, of Wardsville Pastoral Charge, (includes Wardsville, Newbury, Cairo, Aldboro, Dunnich, Euphemia and Mosa), 1896-2009; records, including baptisms, 1920-1949, marriages, 1920-1931, and burials, 1920-1938 of Knox United Church in Newbury, 1894-2005; membership records of St. Andrew's United Church in Cairo, 1968-1992; and membership records of Wardsville United Church, 1895-2005.

Fonds consists of Sunday School attendance record book of Warwick Wesleyan Methodist Church, 1851-1865; indenture of Bethel Methodist Episcopal Church, Warwick Township, 1863; Quarterly Official Board minutes of Watford Methodist Circuit (includes Warwick Wesleyan Methodist Circuit, Warwick, Plympton, Adelaide, Brookes, Warwick, Watford), 1851-1923; marriage register of Brooke Methodist Circuit (includes Salem Church in Brooke Township, Walnut, Bethesda Church in Warwick Township, Watford), 1898-1916; records of Bethel Methodist Church, Warwick Township (includes Bethel Methodist Episcopal Church in Warwick Township), 1867-1896; Sunday School minutes and collection book of Warwick Methodist Church, 1899-1918; records, including marriages, 1896-1917, of Watford Presbyterian Pastoral Charge (includes St. Andrew's in Watford, and Knox Church in Warwick Township), 1892-1925; circuit register of Brooke Pastoral Charge (includes Brooke Methodist Circuit (includes Victoria Church, Alvinston, Salem Church in Brooke Township, Bethesda Church in Warwick Township, Walnut, Zion Church in Warwick Township), Salem Church in Brooke Township, Walnut, Bethesda Church in Warwick Township), 1882-1928; records, including baptisms, 1894-1960, marriages, 1918-1960, burials, 1923-1928, 1935-1960, of Watford Central Pastoral Charge (includes Brooke Methodist Circuit, Watford Methodist Church, Brooke Pastoral Charge, Watford Erie Street Pastoral Charge, Watford, Zion Church in Warwick Township), 1894-1960; records, including marriages, 1935-1960, of Watford St. Andrew's Pastoral Charge (includes Watford Presbyterian Pastoral Charge, Watford, Bethesda Church in Warwick Township), 1921-1960; baptisms, 1953-1971, marriages, 1960-1971, burials, 1950-1970, of Watford Pastoral Charge (includes Watford St. Andrew's Pastoral Charge, Watford, Bethesda Church in Warwick Township, Zion Church in Warwick Township), 1950-1971; records, including baptisms, 1902-1958, marriages, 1896-1968, burials, 1925-1967, of Warwick Pastoral Charge (includes Warwick Methodist Circuit (includes Warwick, Uttoxeter, Bethel Church in Warwick Township), Warwick, Uttoxeter, Bethel Church in Warwick Township), 1896-1968; records of Watford- Warwick Pastoral Charge 1960-2011; Board and Committee minutes of Bethel United Church, Warwick Township (includes Bethel Methodist Church in Warwick Township), 1914-1953; records of Central United Church, Watford (includes Erie Street Methodist Church, Erie Street United Church, 1914-1961; records of St. Andrew's United Church, Watford (includes Watford Presbyterian Pastoral Charge), 1902-1961; records of Bethesda United Church, Warwick Township, 1927-1950; congregational minutes of Zion United Church, Warwick Township, 1941-1971; records, including baptisms, 1972-2010, marriages, 1972-2008, and burials, 1971-2009, of Warwick United Church (includes Warwick Methodist Church), 1924-2013; records of Watford United Church (includes St,. Andrew's Church), 1926-2013

Fonds consists of records created and collected by Agnes Effie Sands Mern and other members of the Wawanosh family. Included are records relating to the life and work of various family members. In particular, the fonds contains records relating to the work of Joshua, David and William as chiefs of the Chippewas of Sarnia. Also included are the personal records of the family including correspondence, financial records, memorandum and account books and personal records relating to births, marriages and deaths. The records of most of the family members are intermingled, possibly a reflection of how Agnes Sands Mern kept them. Also included are the records of Agnes Effie Sands Mern (which make up the majority of the fonds) including her correspondence, financial records (including the records of the Wawanosh Post convenience store), records relating to her musical and artistic interest and records relating to her work in the Church and her activities organizing cultural events and concerts. Also included are the records of Agnes' husband John Phillips Mern such as his correspondence, financial records, notebooks and personal records relating to his son John P. Mern Jr.
Fonds also contains several sketches of members of the Wawanosh family as well as a large assortment of photographs. Photographs include portraits of family members, ministers and missionaries, friends and others as well as images depicting the daily life and travels of Agnes and John P. Mern. Photographs of John P. Mern consist of several albums documenting his time in the US navy and the childhood of his son. Several photographic processes are represented including tintypes, cartes de visite, cabinet cards, postcards and prints.

Fonds consists of records, including marriages, 1896-1911, of Wyoming Methodist Circuit (includes Wyoming Methodist Circuit, churches in Plympton Township, Camalachie), 1872-1925; Trustee Board minutes of Wyoming Methodist Church, 1875-1922; records, including baptisms, 1925-1955, marriages, 1899-1955, 1969, burials, 1925-1955, photograph, of Wyoming - Warwick Pastoral Charge (includes Wyoming Methodist Circuit, Wyoming, Warwick, South Plympton Church in Plympton Township), 1899-1969; records of Wyoming United Church, 1934-1972