Interesting stuff.
I spent 4 years playing college golf at Middlebury, and drove right by PPCC on the way down to Rutland CC and points south many times...we played Neshobe (another old 9/new 9 course, my dad's Midd buddy Rodney Bicknell is head pro now) many many times but I never made it to Proctor-Pittsfield.
I'd say I was too busy "being in college" to have made it to PPCC for an afternoon, but the truth is we drove ALL OVER Vermont playing random courses here and there for four years and I for some reason just never played it despite being only 30-35m away.