This website can provide you with many book titles at your child's "just right" reading level. When you log onto it you need to chose guided reading as your reading level system on the right hand side. This will convert the books into the letters you and your child are familiar with.
Once you do that you can go to the left and search. There are two options. You can type in the title of a particular book you are curious about or you can do a leveled search which will yield many titles for that level.