Valerie Jacobsen currently has many living books for sale!
She has been collecting these kinds of books for many years and has reviewed a a lot of them as well.
She does still ship to Canada, I believe. The reason I'm posting this is that some of the excellent books she is selling are already quite rare and some are especially hard to find here. I own a great number of them already, so I thought this might be something others may be interested in.
You will have to contact her to find out about shipping costs to Canada.
Happy book hunting!