Auburnseeker, I came across this post from 2016 as I was searching Bumstead. I’ve shared some additional photos that I thought you and d.patzarian would appreciate. My grandfather Marvin Tilley worked there beginning in 1931. He retired after 53 years. His brothers Art and Elmer also worked there; all 3 as mechanics. If you still have any of the photos- particularly the second photo in the second grouping that you posted, and would be willing to part with any of them, I would be interested. I believe the gentleman kneeling by the open car door is my grandfather.