Vince Gironda takes Don Peters through a Delt Workout. Source: Muscle Builder / Power (Issue Jan 1969) Page #8 - Muscle Builder / Power (Issue Jan 1969) Page #9 - Muscle Builder / Power (Issue Jan 1969) Page #10 - Muscle Builder / Power (Issue Jan 1969) Page #56 - Muscle Builder / Power (Issue Jan 1969) Page #58 - Muscle Builder / Power (Issue Jan 1969)