Oops, just saw your post shibamom
Whereabouts on the South Shore will you be?
Renaud Bray has a large chain of Francophone bookstores. There's one in Brossard on Boulevard Taschereau, facing the bus terminal. Another is located in St. Bruno. You'll find an amazing choice of books there for all ages. And if there's something you want that's not in stock, the staff there will find it for you.