Congratulations on shipping! Not sure what the process is for US-based public libraries to buy new books, but you should look into it. Where I live (Cupertino, California), the new books section gets read (a lot!)
Thank you! I did also submit this to IngramSparks, which is a platform for bookstores and libraries. From what I've read, the process would be to enable the book for distribution, and libraries would have a way in their systems to review and place orders for new books that are released.