A lot of times it is hard to find French children books in the USA. You can find some on Amazon and some at your local Barnes and Nobles, but another great place to find them is on Ebay. Lots of times they are shipped from Canada, so you might have to pay a little extra shipping, but you can find some good deals if you look for them.
Also, if your children like comic books, Archie prints their comic books in French in Canada and you can order them and have them shipped to your house. You can contact the Archie distributor in Canada for more information.
Some good French children books my kids like are Oui Oui (which is Noddy in English), the French version of Dora (odd because instead of teaching you Spanish, they teach you English, but the bulk of the books are in French), and their favorite is Franklin.
