I was about to go to bed and then saw your posts. I think I'll be up for awhile. Thanks so much!
Sorry :-) Please do let me know if you find something else...
BTW, another Gosch-Wetterling look-alike:
http://www.doenetwork.us/cases/42dmco.html
He disappeared about one day's drive from Phoenix and Des Moines, directly on the land route between them. The road he was walking leads a couple miles up to a campground.
Here's a profile of another one:
http://www.doenetwork.us/cases/34dmia.html
I think there's probably more.