Tom MacWood,
I refer to the sketches in every book of that era showing a carry bunker off the tee that, if successful, opens up the front of the green for a roll up shot, or provides a margin of error short at least. While I obviuosly never saw many of those courses in original form, I know that not every hole these guys designed has that, but it seemed to be the prevalent concept, with, as TEPaul mentions, conservative routes for lesser players.
While that works, I wonder if it is the be all, end all in design. And, from the responses here, I think at least some agree. I also wonder if in that more "macho" male dominated era, just how different lesser players were than today - did any self respecting male actually decline the carry and accept not reaching the green in regulation while standing on the tee? I bet about 1%, same as today, but thats a different topic altogether!