If you're doing Canadian family history research, Héritage is a great digital resource.
Héritage is a free database at Canadiana and contains some of Canada’s primary source documents. Héritage searches the archival material of Library and Archives Canada, “Chronicling the country and its people from the 1600s to the mid-1900s, this collection represents a vast and unique resource for Canadian historians, students, and genealogists.” The free service will search the database for you and return the collections where your ancestor's name is recorded. Then you will need to go page by page, looking for your ancestor's name. In the image below I searched for an ancestor, Jehiel Cass, and Héritage found nine results. With the free service, I would then need to go through each collection, image by image, looking for Jehiel Cass (not knowing if he appears more than once in that collection). The subscription service will search the database for you, return t…