Dai just sent me some really great info to upload here (sent to him by Neil Crafter in Adelaide).
- Golf Illustrated article dated March 28th, 1930 by Henry Cotton about traveling to and playing the actual course that was built at El Boqueron (in the next post, I show the text, so don't strain too hard to read this). It was built in the exact footprint where the Mackenzie course was planned. He played with Aubrey Boomer, who was the brother of Percy Boomer. Aubrey was a great player. Percy was more known as a teacher and was an early adopter of stop-action photography for instruction.
- Historical aerial showing the Percy Boomer designed course that was actually built there
- Historical aerial with lines drawn in to highlight the routing of the holes
I took the historic aerials and un-skewed them over google earth, so I'll attach some transparencies to show how it locked into the land and the differences between actual and the Mackenzie plan.
Looking from the right side of the course up toward the Estancia
Actual course vs Mackenzie plans
And here is the Mackenzie routing with topo lines (10 foot increments with the clubhouse being high and everything going downhill from there.