The heads up for this came from daughter Annalise who found it in the Berkeley University archives. Here’s what the notes to the vid read:
“Professionally-produced film about the California Western Railroad, or “Skunk Line,” running from Fort Bragg to Willits, California, built by Charles R. Johnson in 1885 as part of the “Redwood Route” for moving redwood logs to Mendocino coast sawmills from the back country. Appears to have been filmed circa 1970. ”
Sorry, I can’t embed it you’ll have to click on the link. It lasts about eleven minutes.