The University of Calgary Libraries and Cultural Resources website holds is an amazing collection from across Canada which I imagine is growing constantly. Right now their collection from Saskatchewan contains 360+ books!!
The University previously had a website for digitized local history collections called ourroots.ca but they pulled that in to be part of their greater library research site in 2018.
Jump to their search page and enter your ancestor names and places and see what you find.
Find more eCollections I have used in my article Family History eCollections.