3d train car Diagram of covered hopper car by the gouvernement du canada
Patent us5259322 Hopper covered ps pullman standard diagram 2cd bay drawing cars three cd Patent us4362111
3d train car
Hopper publications covered
Hopper car diagram
Patents hopper car claims covered drawingDrawings from the society’s archives and publications – the santa fe Hopper car patents coveredPullman standard's ps-2cd 4427 covered hopper.