etaoin:

you might try posting your query on either (or both) of the 16mm film collector forums:

www.efilmforum.com
www.16mmfilms.com

Someone may have a print for sale (on 16mm of course!).

and Dr Bill: I have just bought, on an online auction, prints of 'The plow that broke the plains' and 'The river' (both made by Pare Lorentz in the 1930s) for the film collection that I manage for the Film Society I'm involved with. They still pack quite a punch.