Collection contains day books documenting transactions for Dr. Homer Garfield McLay's medical practice in Aylmer, Ontario. Also includes a draft book, and one day book for Dr. H.G. McLay and McLay Miller.

The McRae Family fonds contains records and photographs of the McRae, Cook, Matheson, Hodges, Gray and McKenzie families, which was maintained by Mary Belle Cook (nee McRae). These families were originally from Scotland and settled in the West Lorne, Aylmer and St. Thomas areas. The fonds is arranged into the following series:

Family Insurance Documnents series
Land Records series
Memorials and Obituaries series
Personal Records series
Photographs series

Fonds consists of fifty-five 8 x 10 black and white glass-plate negatives showing scenes in Aylmer, Ontario and East Elgin County, 1913-1936, including interior and exterior views of businesses and residences and portraits of prominent citizens.

Fonds consists records, including baptisms, 1822-1846, marriages, 1833-1839, and burials, 1829-1844, of Malahide Wesleyan Methodist Circuit (includes Malahide Methodist Episcopal Circuit, Malahide, Yarmouth Township, Dunboyne, Luton, Copenhagen, Mount Salem, Bayham Township), 1769-1846; records, including marriages, 1897-1916, of Malahide Methodist Circuit, 1867-1925; Sunday School records of Luton Methodist Church, 1884-1894; deed of Fairview Methodist Church, 1885; records, including marriages, 1912-1925, of Corinth Pastoral Charge (includes Corinth Methodist Circuit, North Hall, North Bayham), 1897-1928; records, baptisms, 1935-1946, marriages, 1929-1979, burials, 1935-1946, of Richmond - Corinth Pastoral Charge (includes Richmond Methodist Circuit, Summers Corners, Fairview, North Bayham, North Hall), 1915-1967; records, including baptisms, 1899-1951, baptismal stubs, 1954--1957, marriages, 1901-1965, and burials, 1901-1972, of Malahide-Richmond Pastoral Charge (includes Luton, Copenhagen, Dunboyne, and Mount Salem, and Richmond), 1899-2013; records of North Hall United Church, 1900-1934; marriage register of Luton United Church, 1917-1936; records of Mount Salem, 1935-1945; records of Copenhagen United Church, 1939-1964; records of Port Bruce Sunday School, 1952-1961; records of Richmond United Church, 156-1973; records of Summer's Corners United Church (includes Summer's Corners Methodist Church), 1917-1979; and correspondence regarding anniversary of Cheapside United Church, 1963.

consists of minutes, photographs and financial records relating to the history and operation of the Terrace Lodge Municipal Home for the Aged in Aylmer, Ontario. Fonds is arranged into the following series: 1. Minutes, 1988 2. Financial records, 1994-1995 3. Photographs, 1976-[199-?]

Fonds consists of records created, collected and maintained by the Corporation of the Town of Aylmer, including minutes of council, by-laws, financial statements and tax records. The fonds is organized into the following series: 1. Treasurer's series, 1872-1995 2. Public School Board series, 1883-1906 3. Board of Health series, 1884-1994 4. Clerk's series, 1886-1994 5. Council series, 1887-1993

Fonds consists of records created, collected and maintained by Elgin Co-Operative Services, [191-?]-2007. Fonds is organized into the following series:
Photographs, [191-?]-1988
Miscellaneous Records, 1940-1984
Minutes, 1943-1998
Financial Statements, 1944-1995
Elgin Fruit Growers' Co-Operative Records, 1945-1961
Annual Reports, 1945-2007
Bond Issues, 1965-1975

Miscellaneous records created, collected and maintained by Elgin Co-Operative Services.

Fonds consists of records and research files on schools in East Elgin compiled by Evelyn McNeil for a 2006 publication entitled "Evolution of Schools: From Quill to Computer". This fonds is comprised primarily of secondary sources, but also includes some original records relating to the teaching career of Mrs. McNeil.

Photocopies, and other reproductions, of newspaper articles, school photographs, letters, yearbook entries and class photographs relating to schools in the Town of Aylmer.

The Aylmer Centennial Garden and Horticultural Society fonds consists of 3 scrapbooks, and associated negatives, encompassing the years 1972-1997, that document the Society's meetings, activities, events, and members.

Fonds consists of baptism records, 1891-1894, membership records, 1888-1914, Session minutes, 1888-1923, and Board of Managers minutes, 1887-1924, of Knox Presbyterian Church, Aylmer.

Series consists of black and white and colour photographs, negatives and slides showing Elgin Co-Operative Services employees, Directors, facilities, equipment, products and services, and events, [191-?]-1988. Includes photographs by Scott Studio, Elgin Studio and St. Thomas Times-Journal, St. Thomas.

Fonds contains photographs documenting the history of the Aylmer Fair, predominantly from 1974-1982, as well as newspaper clippings relating to the 1983 Fair and and entry tags and ribbons from 1995 and 1996.

Fonds consists of annual meeting plans for the period from 1983 to 1987.

Series consists of student attendance registers for Aylmer Public School, 1915-1929.