Great Northern Hopper Car 70238 at Trinidad, Colorado, March 26, 1990, Association of American Railroads Class HT. Other subject classes: Hopper car

Great Northern Hopper Car 70226 at Trinidad, Colorado, March 26, 1990, Association of American Railroads Class HT. Other subject classes: Hopper car

Great Northern Covered Hopper Car 172498 at Trinidad, Colorado, March 26, 1990, Association of American Railroads Class LO. Other subject classes: Covered hopper car