I've looked at this photo so often I think I could name a large percentage if the photo was enlarged, but even at this size it's interesting how many people jump out because of their distinctive physiognomy or clothing: Art Farmer, Dizzy, Monk, Sonny Greer, Prez, Sonny Rollins, Marion McPartland, Mary Lou Willams, Oscar Pettiford, Gerry Mulligan, Oscar Pettiford, Pee We Russell, Coleman Hawkins and Rex Stewart (because of his body shape-- and of course he's got his horn).