This page provides links and references to various historical sources available online or through Markham, Vaughan or other public library systems.

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General historical or primary sources (publications):
This section lists various published historical sources available online or through Markham, Vaughan or other public or university libraries.

Historical Documentaries about Thornhill 

  • The Thornhill Story: 1790-1990 (2 Parts). Description: a historical documentary feature that explores the history of Thornhill, Ontario from the time of its settlement in the 1790's through its development into the 20th century.
  • The Story of Holy Ann. Description: Features the story of Ann Preston ("Holy Ann") (1810-1906). Created by: 100 Huntley St.
  • THOREAU. Description: A short documentary on the life of Thoreau MacDonald (1901-1989), artist, book illustrator, and art editor who lived most of his life in Thornhill, Ontario. He was the son of Group of Seven artist, J.E.H. MacDonald (ca.1989 or 1990).


Local Newspapers (Online):
Several newspapers serving the Richmond Hill and Thornhill areas have been made available by the Richmond Hill Public Library.

Thornhill Heritage Conservation Districts plans:

Designated & Listed houses and buildings in Thornhill:

Thornhill Cemeteries:
Historic Cemeteries of Southern York Region
Includes: Holy Trinity Cemetery, St. Luke's Cemetery, and Thornhill Community Cemetery

Historic Plaques in Thornhill:
See historic plaques that have been installed at various sites in Thornhill to mark places, people and events.

Historical Maps & Aerial imagery:


Thornhill in the Second World War:
Thornhill Honour Roll & Scrapbook, 1939-1945. (Thornhill Archives)


Photographs of Thornhill online:

The Thornhill Archives has an extensive photograph collection ranging in date from the mid-19th century to the present day. The people, places and events that have shaped this community are well-documented in the various photograph collections.

A small number of collections are available online:

The Weaver Collection of Thornhill
In 2003, the Weaver Collection of Thornhill was donated to the Archives through the Estate of the Alf and Laura Weaver. The Weavers created a remarkable photograph collection accompanied by research notes. The collection, which is arranged by street or subject, includes many historical photographs collected by the Weavers. Alf Weaver documented local buildings, people, and events from the 1940's to the 1990's. The collection is particularly valuable in its documentation of Thornhill's transition from a rural to sub-urban community.

Much of the Weaver Collection of Thornhill is available online:

Yonge Street (East Side)
Yonge Street (West Side)
Centre Street
Colborne Street
John Street
Brooke St., Elizabeth St., Mill St., Sumner Ln., Eliza St., Jane St.
Thornhill Street scenes
Thornhill houses and buildings
Thornhill places and people
Photos of Old Thornhill
121 Centre St. - Thoreau MacDonald House, 1981