Yes, and don't forget the great schematic diagram in the back! It definitely didn't come in the box with the C64; I had to save up as well. I still have my copy, tattered though it is, sitting here on my office bookshelf. That, and the book _Assembly Language Programming with the Commodore 64_ [1] changed the way I viewed computers.

[1] https://archive.org/details/Assembly_Language_Programming_Wi...