Does anyone have any recommendations for third-party routes set before World War II? Ideally they should come with scenarios.
I can't think of any UK based add-ons, there are several steam loco's on the Caledonian Works website but no routes that I can think of. There is this narrow gauge American route set in the 1930's but this might not be what you are looking for https://store.steampowered.com/app/325976/Train_Simulator_Clear_Creek_Narrow_Gauge_Route_AddOn/
This website contains comprehensive lists of both DTG and other routes there may be one or two in there that you recognize. https://railworks.freeforums.net/thread/17/railworks-route-numbers?page=1 (free rego)
