My first years in the pro shop bag room began in 1961. We had about 350 sets of members clubs stored. About a dozen sets had wooden shafts. These elderly members seldom played but I had a chance to study the equipment. Iron heads were larger and thinner because they were easier to forge. Wooden shafts were thicker than steel from end to end in order to make them stiffer and less prone to twist or torque. The thick wooden shafts required thin leather grips.