The fonds consists of four financial ledgers created between 1860 and 1893.

The series contains correspondence, newsletters, photographs, scrapbooks, postcards, diagrams, clippings, bulletins, brochures, programs, song sheets, posters, publications, dramatic scripts, and reports. This material is related to the history of the third Mother House of the Sisters of St. Joseph in London, which was called Mount St. Joseph. There is information about the construction of the building and detailed information about its special features and decoration, including the Immaculate Conception Chapel, and its grounds, particularly the Grotto. The records also relate to planning the construction of, and move to, the Sisters’ residence in 2007, and the sale of the Mount St. Joseph building and property. There are records which reflect communal life in the convent, including the various organized groups, events, and dramatic and musical entertainment, and menus, meal planning, and recipes. The series contains records related to men religious who served at the Mother House, and other Diocesan correspondence. Information about both Fatima Hall and Ignatia Hall can be found, including the various uses of space in these buildings.

Papers of Howard T. Pammett (1909-1990), civil servant with the federal Department of Labor and local historian, consisting of correspondence with many people including Margaret Hennessy, 1984; C.K. Bottom, 1968-71; Peter McGillen, 1928-73; Eugene Forsey, 1969; Peterborough Examiner, 1945-53, chiefly with Robertson Davies; research notes and thesis while a student at Queen’s University, 1930-1935; some papers related to his travel and work with the Department of Labour, 1941-69; poetry and other literary works by Pammett; together with correspondence and research materials related to the local history of Peterborough, the Trent Canal, Irish emigration, the Grand Trunk Railway, the Peterborough Exhibition, Peterborough Collegiate and Vocational School, Ontario agriculture and the Kawarthas.
Peterborough history; post office; Peter Robinson Settlers; Queen's University; Canada Department of Labour; Robertson Davies correspondence; news clippings v 15. 1925-1980.

Item consists of a postcard showing a flower bed in front of the Civic Centre municipal complex.

Series consists of photographs of Trinity College School buildings and facilities from 1865 in Weston, Ontario to the present day in Port Hope, Ontario.

Fonds consists of records related to the personal and military life of Jack Ryrie, TCS class of 1920. Included are one postcard, three photographs, a University of Toronto Architectual Design award, and WWII medals, badges, insignia, buttons, and identification objects.

Materials related to the architectural history of Lakehead University, as presented at the Thunder Bay Art Gallery.

Fonds contains research files compiled by local historian Paul Baldwin relating to architecture and architects in St. Thomas and Elgin County, principally related to the work of John T. Findlay and Neil R. Darrach with an emphasis on Darrach. Also includes information on David Kilpatrick, Elgin County's first architect, as well as research notes that informed Baldwin's "Legacy" column published in "Community News". Finally, fonds contains original architectural plans created in circa 1903 by Neil Darrach for the St. Thomas Public Library building, as well as a photocopy of a plan for the residence of R.A. Cook.

Research collection of Martha Anne Kidd, local Peterborough historian, relating to her work with Peterborough Architectural Conservation Advisory Committee (PACAC), Peterborough Historical Society, Peterborough Planning Committee, as well as numerous research notes and papers on the preservation of historic buildings, the Ontario Heritage Act, and Heritage Canada..

Series A Historical Preservation in Ontario (Files 1-101), 1932, 1967-1991

Series B Heritage Planning in Peterborough (Files 102-166), 1962-1991

Series C Heritage Tourism and Promotion (Files 167-230), 1968-1978
Includes brochures for many committees promoting heritage and tourism, particularly in Central and Eastern Ontario; documents related to the Roy Studio Collection promotion(1996-1998); original sketches and planning with Tim Jackson (1984); Heritage Peterborough (1985-1987); Jackson Park Pagoda Project (1987) including historical research from the 1890s.

Series D Historic Properties (Files 231-300)
Photographs, historical research and materials relating to streetscapes and identified houses and buildings in Peterborough and surrounding areas; includes information from CIHB and HABS, c. 1970; PACAC bylaws (1974-1986)

Series E Peterborough Biographies (Files 301-400)
Historical research on Peterborough individuals, (including all architects) and families as well as records relating to the Peterborough Historical Society.

Series F Mixed Items (Files 401-461)
Highlights include: Dobbin Index to Industries (1913), Dr. Hutchison Register of Births (1817), Langton Letters (1834-35), Prime Time Profiles.

Series G Peterborough Despatch (Files 462-564)
Copies of news articles (1848-1860) on subjects such as: Peterborough Town Council, bylaws, elections, politics, Peterborough people, agriculture, amusements, businesses, organizations, fires and fire brigade, military, religion, sports, transportation; births, marriages, deaths

Series H Ashburnham Maps and Plans (Files 565-580), 1850-1903

Series I Peterborough Fire Insurance Plans (Files 581-600), 1882, 1889, 1911, 1929
Also includes Peterborough County and Town maps

Series J Martha Ann Kidd and the Heritage Movement (Files 601-657)
News features on Martha Ann Kidd, correspondence; papers relating to her husband, Kenneth Kidd, a professor of Archaeology at Trent University.

Series K Ashburnham and Peterborough City Collector’s Rolls and Directories (Files 658-702)
Copies of Ashburnham Collector Rolls (1861-62), copies of Ashburnham Directories (1858, 1864, 1865-66, 1870, 1876, 1883-84, 1894-95, 1897, 1901, 1903, 1904, 1905, 1907, 1908, 1909, 1910, 1912, 1913, 1914), copies of Ashburnham Assessment Rolls (1874, 1882, 1889, 1899, 1900), copies of Ashburnham Voter’s Lists (1863, 1878), copies of Peterborough City Directories (1851, 1858, 1870-71, 1876, 1883, 1888, 1895, 1897, 1913).

Series L Peterborough Street Index (Files 703-772) Photographs and descriptions to various properties.

Series M Peter J. Stokes Photographs (Files 773-779), 1969
Photographs and negatives relating to the downtown district of Peterborough.

Series N Photographs and Postcards (Files 780-834)
A vast photograph and postcard collection depicting residents, properties, and events in Peterborough townships including Lakefield, Chandos, Harvey, Otonabee/Keene, Asphodel, Dummer, Douro, Smith/Ennismore as well as Stoney Lake. Materials relating to surrounding counties such as Victoria and Northumberland should also be mentioned.

Series O Negatives (Files 835-924)

Series P Street Series (Files 925-1407), 1970s
Collection includes historic summaries of various street names in downtown Peterborough, as well as a detailed street by street pre-1890 building inventory featuring many photographs of Peterborough properties as well as owner history.

Series Q Canadian Inventory of Historic Buildings (CIHB) Reports (Files 1408-2863)

Series R Mixed Items (Files 2864-)

This photograph album was likely prepared for advertising and promotional purposes by the O'Connor and Lancaster firm, or "Popular Photo Studio". It contains prints of London, Ontario, scenes, as well as advertising and promotional information about London and some of its businesses.

The fonds consists of records that reflect the different roles that Janet played throughout her life as well as the various activities and functions she performed throughout the community. The fonds is arranged into five series and then various subseries, all of which reflect Janet’s diverse activities.

The majority of the records are textual (i.e. minutes, reports, correspondence, published material, newspapers, etc.) although there is also a sizable photograph collection as well as some maps and plans and even artwork. Fonds consists of: Binder Twine Festival programs, posters, artwork, committee minutes, advertising, press releases, copies of by-laws, books, correspondence, account ledgers, newsletters, speeches, research notes, newspaper clippings, cassette tapes, Kleinburg/community history notes (eg. United Church, historical buildings and homes, families and individuals), walking tour booklets, notes on Kleinburg and Vaughan development, Humber Heritage committee notes, agendas, newspaper clippings, reports, LACAC/Heritage Vaughan books, notes on heritage homes and architecture, minutes and agendas, manuals, newspaper clippings, reports, CFUW books, newsletters, pamphlets, journal articles, minutes, conference notes, newspaper clippings, Kleinburg Home & School Association notes, newspaper clippings, HELP newspaper clippings, minutes, newsletters, Operation Catch-Up files, CACY pollution and development notes, Dellcrest notes, reports, minutes, KARA agendas and minutes, notes, correspondence, address books, calendars, agendas, travel notes and booklets, guidebooks and maps for locations around the world, other Ontario and Canadian heritage books, reports, magazines (York, food, National Geographic, Beaver, cat), fiction books, journals, programs, pamphlets, maps, Kleinburg Shaw store account ledgers from late 1800s to ca. 1930.

The fonds consists of architectural drawings completed by architects, Thomas Cuthbertson and Joseph A. Fowler. They are arranged into the following series:

Series 1: House of Refuge
Series 2: Music Hall, Woodstock (Woodstock Opera House)
Series 3: Residence of Dr. D.R. Ross, Embro
Series 4: St. David’s Ward School, Woodstock
Series 5: Ayr Public School, Ayr

Item is a commemorative coin created by the Port Hope Chamber of Commerce, 2000. It includes an image of Molson Mill, and the following text: "Port Hope and District - Where Town and Country Meet - "The Molson Mill" OCA Summer School, 1924-1929" (front) "Prosperity 2000 - Commemorating the New Millenium - Port Hope and District Chamber of Commerce - Est. 1874 - Ontario, Canada" (reverse).