Semi-freelance Burlington Route, with connections to the Northern Pacific, Great Northern and Rock Island from Illinois to Denver...all in a 14 x 14 room! Selective compression is really a practice! All this takes place in the late 1940's - late '50's, definitely before the merger, and mostly before Chinese red paint jobs on road switchers. I actually rode the Pioneer and Mark Twain Zephyrs as a kid in the midwest back in that time period. Steam and "Q" E-5's, E-7's, E-8/9's and lots of passenger traffic, as well as coal trains.