Approximately when did US railroads begin applying white paint on caboose railings and some grab irons?
Right. I also doubt it was a standard. But a whole bunch of companies did it. I just don't have enough photographic evidence. For instance, I was looking at the Hickcox GN color freight car book. Those few photos I could spot, looked as though possibly early 1960's. But not enough views to get close. I did the same for a couple of other companies as well, but.... I'm looking at a freelance caboose project, where I need to decide if these would be appropriate. That chosen era is post-WWII, but pre-1960. Painted the same color as the car body, the railings blend in as if just cheaply molded on. Rather disappointing.