Yes, provided the pieces (and the edition!) are truly in the public domain
in Canada (or the US). Please review
http://imslp.org/wiki/Public_Domain first! Also, please note that we tend to discourage posting from the Werner-Icking Music Archive (WIMA), because many of the pieces there are actually arrangements or new editions, and so under copyright.
Also, be sure to remove any trademarks from the images before you upload them!