This website offers a variety of books and also let's you create your own books. 

https://tarheelreader.org/

Please look over this guide to help you use books in a more efficient way, as well as give you ideas on how to promote speech and language development and literacy skills in your child. 

ROR-DevGuide_Speech-Language.pdf

https://www.readingrockets.org/article/reading-together-tips-parents-children-speech-and-language-problems

Please look at the list of books below.  Some of these tittles may be available to you digitally, or you may discover you own some of these books.  

Book Tittles Useful in Promoting Speech and Language Skills.pdf