Ian: I have always been a little unsure about the Donald Ross connection, and haven't done enough research myself to prove or disprove the claim.
As I understand it, Wilkinson constructed the original nine (Donald Ross?). When they expanded to 18 holes, Murray did that work. Then, in the 1980s, when they built the West Course, the RTJ firm utilized five holes (Old No. 11 (now No. 1 West), Old No. 12 (now No. 9 West), Old No. 13 (now No. 10 West), Old No. 14 (now No. 17 West) and Old No. 9 (now No. 18 West). Old No. 10 is still in existence but only used as a practice/warm-up hole and Old No. 15 was located where the golf range now stands, although the green is still in the rear of the range for instructional clinic use.
It's too bad the drawings were lost, but would you be able to share the construction photos? I would love to see them and share them with the club.
I haven't read the Malone Golf Club history book in a couple of years, but I'll try to take another look soon. Additionally, my wife and I are hoping to take a vacation to the Adirondack region this summer and if that comes to fruition, no doubt I'll get in a round at MGC. If I do make it up there, I will try to speak with some of the few remaining club members who were actually around when the nine-hole course was converted into 18 holes and also with a few of the board members who were involved with the West Course's construction.