So far as I know, this photograph of Keith Richards was taken by Ken Regan in New York in 1975, backstage at Madison Square Garden. But, it isn’t the photo of Keith wearing that particular shirt that is directly credited to Ken Regan. Who was Ken Regan?
I love this photograph, it is a favorite. As for Keith and Mick’s battles with one another, they first met in 1950, when they were seven, feel free to (re)search away!