I was doing research and stumbled over Music Australia, a part of the Australian National Library. On a whim I checked out Patterson's Waltzing Matilda, it being the only song my fatigue fogged brain could dredge up.

I found this letter from Christina Rutherford Macpherson to a Dr. Thomas Wood telling him of the origins of the song. The letter is not dated.

The site may be of some interest to some of you.