Up until the other day I knew of two different versions of Mackenzie's routing plan for ANGC, as follows:
1. A black and white line drawing, dated June 1932, and reproduced in Doak et als "The Life and Times of Alister Mackenzie". This plan has the holes numbered in reverse to how they are today.
2. A coloured plan, included in partial form in David Owen's "The Making of the Masters", which is unfortunately undated. The holes are numbered as they are today, which likely makes this plan earlier than the June 1932 plan as Mackenzie apparently decided to reverse the nines later in the design process.
UPDATE: This plan is dated July 1931, and is the earliest of all three plans (courtesy Tom MacWood)And then while trawling websites I found an augusta.com website on the Masters that had another version of Mackenzie's plan that I had never seen before. It is a lovely looking drawing, coloured with watercolours, and is dated November 1931. Like the black and white plan, this one has the nines reversed from today. From this I could conclude that this plan lies between the other two plans in terms of dates. The website also featured an enlargement of the area around the clubhouse showing the 9th and 18th greens and the 19th hole Mac designed. And for those with good eyes it appears a nice little painting of the clubhouse building in elevation lies where the clubhouse should be on the plan.
I just thought I'd bring this to people's attention and I'd like to hear if anyone has seen this plan before. And any comments on the differences between the plans might elicit an interesting discussion. I hope