Elvis Presley

Looking for something else, stumbled on Elvis's Bible and his copy of Fanny Crosby’s Story of Ninety-Four Years.

https://www.gottahaverockandroll.com/Elvis_Presley_Signed___Inscribed_Book__Fann...
https://www.gottahaverockandroll.com/Elvis_Presley_s_1974_Personally_Used__Inscr...

Again, just in case anyone is trying to put together a list for Elvis:
Kahlil Gibran's The Prophet
https://www.finebooksmagazine.com/blog/sale-elvis-presleys-annotated-copy-prophe...

I don't remember seeing a library specifically but the Graceland Archives can be found here.