Thanks so very much for the response. If at all possible, I would love to see more photos of all aspects of the mine, railway, Possum Point, et al. I forgot to mention that according to Tilp, all rolling stock was 4 wheeled.
About 5 years ago, I mentioned the line to one of the purveyors of railroad drawings (Underground Railway Press) who thought the line was 2 foot gauge but like me had no information, so your post has been a god-send. Around the same time period there was a request for more information about the mine in Railroad Model Craftsman. I attempted to contact the individual but received no response. If I come up with his name I will pass this info along.
I have seen a photo of the scrapped locos in Woodbridge, but do not have a copy in my collection. The owner is deceased.
One last note-neither the Pennsylvania RR Museum nor the California RR Museum have anything in their collections re the Cabin Branch Mine.