Not seen that before. George Eddy was an interesting one. English-born pro, emigrated to Oregon then moved to Seattle and built Foster Golf Links which opened in 1925 - a really fun 4,804-yard Par 68. Eddy invented the fairway vacuum cleaner, a large, odd-looking contraption that vacuumed up leaves.
The part about Macan working at Gearhart doesn't really help shed any light does it? "The Colwood, Inglewood and Gearhart links are of his (Macan) brainwork and handiwork.” (Seattle Times 7-22-1922). The suggestion is that Macan had done renovation work at Gearhart although it is unclear as to when and to what extent." This is by far the most detailed article about Gearhart I've seen, but Macan's role remains uncertain.
I think you'll really enjoy the course, Mike. Last time I was there I was a bit disappointed to see the fairways and green surrounds were quite lush, dark green and spongy, so hopefully you'll get it following a dry spell and before they turn the water on.