To locate what libraries own the books identified in the following lists, use WorldCat. You can also try using I-Share (a shared catalog for academic libraries in Illinois), but some academic libraries will not send children's books via interlibrary loan.
I-Share This is the catalog for the consortium of academic libraries in Illinois. A major advantage is that you can directly order books and have them delivered to an academic library close to you. One caveat is that some I-Share libraries won't lend children's books.
WorldCat. This is the shared catalog of most libraries in the United States (and beyond). You will be able to tell if public libraries in your area own a particular book that you are looking for.