From the webpage:
These collections contain over 80,000 rare books, magazines and government publications from the 1600s to the 1940s.
This rare collection of documentary heritage will be of interest to scholars, genealogists, history buffs and anyone who enjoys reading about Canada’s early days.
The Early Canadiana Online collection of rare books, magazines and government publications has over 80,000 titles (3,500,000 pages) and is growing. The collection includes material published from the time of the first European settlers to the first four decades of the 20th Century.
You will find books written in 21 languages including French, English, 10 First Nations languages and several European languages, Latin and Greek.
Every online collection such as this one, increases the volume of information that is accessible and also increases the difficulty of finding related information for any given subject. But the latter is such a nice problem to have!
I first saw this in a tweet from Lincoln Mullen.