U.S. Army Coast Artillery Corps Battery B, 42nd Artillery and 602nd railway WWI

This is a group of 29 photographs which are still glued to scrapbook pages. I think these are photographs taken by a member of U.S. Army Coast Artillery Corps Battery B, 42nd Artillery which were engaged in Army maneuver in the fall of 1920. There are pictures from Navy Base Norfolk, Camp Eustis, VA. There photographs of the CAC 10-inch Gun, Fort Motors, 12-inch Motor M1918 Railway Carriage, 8-inch M1918 Railway Gun. Also there is a neat picture of the Railway Artillery Reserve insignia painted on the side of a military train, marked on one side B and other 42.