NWP on the Silent Silver Screen

Back when I worked at California State Railroad Museum in the 1980s-90s, one of my happier chores was to fine-filter the tens of thousands of historic photographs that landed in the research Library's collections from many old-timer railfans and their widows. A lot of them came in all lumped together or in wildly mixed arrays.

One pair (larger format 8x10-ish) which cropped up showed what was clearly some publicity stills from a silent flick shot in or near Tiburon around 1920. No information was on the back of either image, but the scene involved a woman dressed as a workman (in a well-worn 10-gallon hat no less!) in coveralls, her fist raised to punch the daylights out of a bulkier fella she had somehow pinned against a NWP wood-clad box car standing hard against a freight dock. The other shot was similar but the photographer had pulled his tripod back enough to show the same cast members as well as the movie cameraman and his gear, lighting guys and the director, a gaffer or "best boy"...

So, is anyone aware of what commercial (?) silent movie this would have been?

In any event, the photos in question were properly put into NWPRR subject photos folders in the hopes that somebody, some day could help further ID the images.