If you have been reading my blog for some time, you know how important land records in Ontario can be for locating where our ancestors lived. As part of any land record research we also want to "see" where they were on a map. Quite often I will make use of the numerous illustrated atlases of the counties of Ontario found digitized on the "In Search of Your Canadian Past: The Canadian County Atlas Digital Project" hosted by the McGill University.
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| Partial screen capture of the landing page for the In Search of Your Canadian Past: The Canadian County Atlas Digital Project site taken 2 Feb 2026. |
This site has high quality scans of maps from books originally published in the late 1870s to early 1880s. Yet have you ever wondered where those maps came from and if there was anything more than just those maps in those books?
Wonder no longer!
Some of you might have seen a group of large books like this in your local library or archive if you live in Ontario.
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| Picture of the shelving holding the Illustrated Historical Atlases of Ontario held at the Nepean Centrepointe Branch of the Ottawa Public Library (taken 10 Feb 2026). |
Here we see a picture of the various Illustrated Historical Atlases of Ontario Counties held at the Nepean Centrepointe branch of the Ottawa Public Library. They are available for anyone to peruse. During the joint Ottawa Public Library and Ottawa Branch of Ontario Ancestors in-person drop-ins, we've periodically used these books instead of going online to look at the maps.
But what if you don't have access to a library or archive with those books?
One of the projects announced in November 2024 by the Canadian Research Knowledge Network, CRKN, the fine folks who bring us the Canadiana and Héritage, was an update to the Ontario Historical County Atlases. That project has now been completed.
We can find those recently digitized books online for the following counties (some counties are group together into a single book):
Ontario county atlases:
- Brant
- Carleton
- Elgin
- Frontenac, Lennox and Addington
- Haldimand
- Halton
- Hastings and Prince Edward
- Huron
- Lincoln and Welland
- Middlesex
- Norfolk
- Northumberland and Durham
- Ontario
- Oxford
- Peel
- Perth
- Stormont, Dundas and Glengarry
- Wentworth
- York, township of West Gwillimbury and town of Bradford
The Illustrated Historical Atlases of the counties not only have the maps of the townships but also possibly the following sections that help us understand the history of the county:
- Early settlement details
- Military history of the units raised in the county
- Key officials at the time the atlas was created
- Histories of the villages, towns, and townships
- Biographical sketches of prominent people and families in the county
Often we will also find a list of those who patronized or subscribed to the atlas at the time of its creation. We might learn where they resided in the township, village, or town, when they settled, where they were born, and even their occupation. However, not everyone paid to have their name included. So, your ancestor might not be listed.
Then there are the pictures of various notable buildings, farms, and even people.
If you live on the property previously owned by James McLaurin located on Lot 21 of the 6th Concession in the Township of Osgoode, wouldn't it be interesting to see what it looked like in the late 1870s?
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| Illustrated historical atlas of the county of Carleton (including city of Ottawa) Ont. (Toronto : H. Belden, 1879), p. 5, sketch of the "Res. of Jas. McLaurin. Con. 6, Lot 21, Osgoode Tp., Ont.," [image 60 of 100] (https://n2t.net/ark:/69429/m07m03x85b1p : accessed 10 Feb 2026). |
Of course there are the obligatory maps of the townships. But you might even find street maps of the villages and towns.
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Illustrated historical atlas of the county of Carleton (including city of Ottawa) Ont. (Toronto : H. Belden, 1879), p. 46, map of Stittsville as part of the Map of No. Gower page [image 84 of 100] (https://n2t.net/ark:/69429/m07m03x85b1p : accessed 10 Feb 2026). |
In addition to the county atlases, some of the county maps are found in the Dominion of Canada atlases:
- Bruce County edition
- Grey County edition
- Kent County edition
- Lambton County edition
- Lanark County edition
- Simcoe County edition
- Victoria County edition
- Waterloo County edition
For the counties found listed in the Dominion of Canada atlases, generally you will find the maps of the townships towards the end of the book. But don't just stop after you find maps of the townships. In many cases you will come across a "Biographical Directory" of those who lived not only in the rural parts of the county but also the towns and villages.
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| Illustrated atlas of the Dominion of Canada [Victoria County edition] (Toronto : Belden & Co., 1881), Biographical Directory of Victoria County Subscribers, p 3 [image 179 of 180], Ops Township, Alexander McKinnon (https://n2t.net/ark:/69429/m2025000032wv5b : accessed 10 Feb 2026). |
Above is the entry for my 3rd great-grandfather, Alexander McKinnon, who lived in Ops Township in Victoria County. If I didn't already have this additional information, now I have a starting point not just for locating any land records but also when and where he was born, and when he came to Upper Canada.
Just note that this directory is of subscribers, i.e. those who paid to have their name listed. That means not every person will be mentioned in the directory.
Even better, these books have been made full text searchable. When I typed in "McKinnon" into the search box, two matches appeared. One of them was the page that has the clipping shown above found almost at the end of the book. Of course, the accuracy of the search depends on the quality of the images. That means we may have to actually read what is on the pages on not just rely on searching for names.
Finally, you might have notice that not all the counties in Ontario have been digitized. Only those atlases held in the collection of the McGill University Libraries were included in this project. The maps on The Canadian County Atlas Digital Project for several counties, such as Renfrew, came from material held by Library and Archives Canada. We can see the list of where the maps came from on the The Canadian County Atlas Digital Project Primary Source Material page.
Maybe CRKN might consider asking permission from Library and Archives Canada or the publishers of the reprints to also digitize those books that aren't already found on Canadiana?

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