Here's photo identifying the ground. Circled in white, upper right.
You know - the other left. .
It has been on every alternator I've ever changed, although some have had wires as shown while others have had braided straps. All mount to the same locations.
This ground is shown in Wayne's rebuild book on pages 135, 155, 179, and 182. It is also mentioned in the disassembly phase on page 26 and shown on page 27.
Wayne's 101 Projects book mentions this ground on page 63 in paragraph 2.
The braided version is shown in the Haynes in photos 7.14a and 7.14 b on page 19, and in photo 30.21 on page 34.