Car builders' dictionary; definitions and illustrations of American railway cars, their parts and equipment; 1913 byMaster Car Builders' Association; Wright, Roydon Vincent, 1876-1948, ed; Loudon, Andrew Charles, 1883- ed https://archive.org/details/cu31924032183208/page/n5/mode/2up?q=train+lighting
You wouldn't believe what's on archive.org. A little bit of everything! I stumble across things like this while researching Ashton Valve. It appears endless.