Some of the heavyweight Pullman cars (privately owned after 1948) lasted in passenger service into the early 1960s, at least in the south. If you model any passenger trains through the 1950s, having both heavyweight and streamline (lightweight) cars is prototypical. If you like a particular road and date (say 1956) find some public timetables for that year and railroad and look at what type of sleeping car (or even dining car) is listed in the consist for a particular train. The 10-1-2 and 8-1-2 types were still in use, right beside streamline 10-6 sleepers. Some railroads, like the ACL, SAL and Southern in the south, painted the heavyweight cars to match new streamline cars, so they would blend in while sitting at a station.
I am looking for some 3-rail GGD Pullman 12-1, 10-1-2 and 8-1-2 myself to mix and match.
