Hi all, with the release of Spirit of Steam and the most backdated route in TSW (by a margin) yet, I wanted to discuss a new topic: how far back can we set a route?. As shown by many articles and streams on Liverpool - Crewe, it was quite a challenge finding information on how a route looked over 60 years ago. 4705 at Exeter St David's on the Riviera Line. This is also an issue I ran into with my own route suggestions. The information on my Preußische Ostbahn in the 1910's suggestion for example was little and hard to find, making this route nearly impossible to accurately represent in TSW (something I had barely thought about at the time of suggesting). However, comparing it to post-WW2 routes shows a world of difference. On my Moselstrecke in the 1970's (yes Deutsche Bundesbahn used steam engines for a decade longer then British Railways) suggestion for example, pictures of pretty much the entire route were plentiful. On British routes, like Liverpool - Crewe, there seems to be plenty reference material going back to the 1950's. Of course Liverpool - Crewe is evidence of this, but also my Riviera Line & South Devon Main Line in the 1950's suggestion was easy enough to do research on (no wonder this route is also included in TS classic). A BR 01 with an express train from Paris on the Moselstrecke near Neef with it's beautiful vineyards. All in all I think the cut-off point for how far back a route can be realistically set depends on a few factors. How big was the railfanning scene in the country/area back then? How well and how long were documents kept by the railway company? How attractive was the route to spotters and photographers, or even professional documentary makers? (depending on how scenic the route is, how interesting it's operation, which engines could be seen on it, how unique is was) How big was the acces to cameras for the spotters back then? How much has the route changed since the era you want to set it in? Are the locos that ran on the route preserved? And in what condition? King Class 6018 'King Henry VI' with The Mayflower at Dawlish (on the Riviera Line), 1958 I might come back and edit that list as I think more about it, but it feels like a pretty nice list already. Looking at for example Liverpool - Crewe, we can see that the change the route has underwent since then is probably the most problematic, as the route was in the middle of major overhauls and electrification during the 50's and 60's, and saw major yard shrinkage and simplification in the decades to come. My first example, the Preußische Ostbahn in the 1910's fails on pretty much all of these points. The Moselstrecke and Riviera line suggestions are more potent on the other hand, both having tonnes of reference materials, due to there nature as spotters havens, and their respective era's seeing a lot more spotters taking pictures aswell. In addition to that, both routes, although having been modernised intensely aswell, have not had changes as drastic as the major ECML on Liverpool - Crewe has, with the Riviera Line not even having been electrified. A BR 44 heavy freight engine on the Moselstecke. I do wonder what your thoughts on the feasibility of for example an interbellum UK grouping era route is, or a German one for that matter. So please do let me know what you think are prerequisites for a feasible historical route, and which historical routes that you think are feasible you'd like to see!