Here are a couple of books that I've bought and enjoyed reading.
- Snaps, Elliot Erwitt
- Dog, Dogs, Elliot Erwitt
- Leica: Witness to a Century, Alessandro Pasi
I have an old edition of this book. The link points to the new revised edition. - Leica M: Advanced Photo School, 2nd Edition, Günter Osterloh
- Looking In: Robert Frank's The Americans, Expanded Edition, Sarah Greenough