http://www.teachersdiscovery.com/ItemList--French-Readers--m-712
The books I suggested in class were the ELI readers (ELI = European Language Institute) that offer comprehension questions and vocabulary exercises as you read. They are meant for younger readers, but as long as you're using them as a tool and not for literary fulfillment, you should be fine. This is one of many places to look for them, so if you see a title you like but want to check Amazon or somewhere else, you might have luck doing so. They usually list a level for each book, so you can also use that as a guide.
