Back in the early 90's a national sporting goods trade magazine ran a contest to see who could identify the most quarterbacks in this photo, then black and white. I won. My prize was an official NFL helmet, which I have to this day. I chose my favorite team at the time, the San Francisco 49ers.
Recently Uni-Watch published a colorized version of the photo.
Back Row: Browns, Steelers, Cardinals, Bears, Packers, Colts, Redskins, Rams
Front Row: Lions, Vikings, Cowboys, 49ers, Eagles, Giants
Milt Plum, Bobby Layne, ?, Billy Wade, Bart Starr, Johnny Unitas, ?, ?
?, Fran Tarkenton, Don Meredith, John Brodie, Sonny Jurgensen, Y.A. Tittle