3 books in series

The Feynman Lectures on Physics (The New Millennium Edition)

The Feynman Lectures on Physics (The New Millennium Edition) is a 3-book series with 3 released primary works first released in 1963 with contributions by Richard P. Feynman, Robert Leighton, Matthew Sands, and Robert B. Leighton.

The Feynman Lectures on Physics, Vol. 1
The Feynman Lectures on Physics Vol 2
The Feynman Lectures on Physics Vol 3: Quantum Mechanics