I'd say Jeffersonville would have to be older than 1931 and maybe older than Aronimink. McGovern's daughter would certainly know. Her number is around here somewhere.
One reason I say that is there's an ad in that July 1931 Delaware County Times Special Edition for the Penna Amateur Championship at Aronimink that says;
"Jeffersonville Golf Club was designed by Donald J. Ross Associates, nationally known planners and builders of championship golf courses. This course is noted for its velvety, creeping bent fairways, interestingly trapped, and its rolling, beautifully wooded fairways".
Since that ad is in the summer of 1931 it sounds to me like the golf course had been around a while.
Michael:
The word around here has always been although the course was built under the Ross name, and receipts were found paying the Ross Co, that McGovern did this one himself, and his daughter who seemed to be very close to Ross confirmed that. That would probably explain why it doesn't show up on Ross's list of courses.
MikeC:
You think you got a deal on green fees? The fee in that ad was $1 on the weekdays, $2 on the weekends and 50c for women on Tuesdays.