Buying the albums sampled on “You Can All Join In”.
Only two members of the band were present at the shoot, and both are visible on the cover: Gary Wright and Mike Harrison, who of course doubles as the sole member of Art present at the shoot. They can be seen a little better in the close up of the rear portion of the group:
At the upper left corner of the picture, peering over Steve Winwood’s woolly hat, is Gary Wright; all that can be seen of him is his hair, his right eye, his nose and his left eyebrow.
Conversely, Mike Harrison’s is one of the few faces in the photo which can be seen in full. He is is in the second row from the back, just to the left of centre, staring at the camera, just to the right of Jim Capaldi, the chap wearing sunglasses.