Spent a little more time looking at old White vehicle info, found this:

https://rmsothebys.com/en/auctions/af18/auburn-fall/lots/r0310-1914-white-model-thirty-gah-touring/699496

Car on trailer appears to be stripped version, maybe for early endurance runs or something similar.

I was way off on my guess of early vehicle manufacturers, found this site:

https://en.wikipedia.org/wiki/List_of_defunct_automobile_manufacturers_of_the_United_States