I know there's a few of Keith kicking around, but I don't think I've ever seen any pictures of Mick Taylor playing bass...be interesting to see, if there are any out there...
I have a song book called 111 Jagger/Richard (yes, no ...d's!) Rock Greats - up till Exile but including some songs from Metamorphosis and even stuff like So Much In Love and You Must Be The One (!!!) - released in 1975 by ABKCO that has a photo of Bill with an electric GUITAR. I can't identify that, it must be from a performance for his first solo album.