Susan, yes I have used LOC recordings for some of my research - the LOC is a wonderful resource. And thanks for the additional info on the online collections.

Over on the FiddleFork site suggested by Bill D, someone has just come up with a very similar tune, which to my ears sounds like it was taken from the same common tune as this one in question, with both versions have gone through the "folk process" described above by Anglo.

Here it is - I'll try to create a blue clicky thing and see what happens. http://www.mp3.com/albums/74279/summary.html

Have a listen to track #12, called Loggerman's Reel/Dulcimer Reel by John McCutcheon. It is Loggerman's Reel that you hear a snatch of, and it sounds like a version of the van Wagner tune. The A & B parts are reversed, and certainly there are melodic differences, but a very similar theme & feel. McCutcheon got it from NY hammered dulcimer player Paul Van Arsdale, who got it from a radio broadcast of a Canadian logger/fiddler in the 1950s!