I am not well read on the COFC service in the 1970s, but I am fairly sure that containers on 89 ft flats were common during this period. Does anyone know where the COFC load/unload facilities were on the Frisco? Were they the same points as the TOFC ramps? What vehicles were used to load/unload the containers from the flats? My curiousity has peaked since I bought two Walthers Flexi-Vans w/flats (one NIFX/MILW containers, one Seaboard car/SBD containers) over the weekend. I have already learned that the North American Leasing cars leased to the MILW under NIFX (early 1960s) reporting marks later went to MILW reporting marks and numbers by 1976 (58xxx series). I will have to change those to put this car in service correctly. I also know that these were originally intended for US Mail service but the railroads lost the mail contracts late 60s/early 70s. Since this equipment was fairly new, it appears that it was put in general service but photos are difficult to come by. Any info on the Seaboard Flexi-Van or Flexi-Vans in general would be a great help.