Great Northern Boxcar 37750 at Longmont, Colorado, August 28, 1980. Other subject classes: Box car

Burlington Northern steel caboose 10050 backing in a yard at Longmont, Colorado, on December 31, 1989. The former Northern Pacific (NP) car is part of the NP 10050-10099 number series. Photo by GJ Werkema. Other subject classes: freight car, steel caboose

Burlington Northern steel caboose 10050 backing in a yard at Longmont, Colorado, on December 31, 1989. The former Northern Pacific (NP) car is part of the NP 10050-10099 number series. Photo by GJ Werkema. Other subject classes: freight car, steel caboose

Burlington Northern steel caboose 10050 backing in a yard at Longmont, Colorado, on December 31, 1989. The former Northern Pacific (NP) car is part of the NP 10050-10099 number series. Photo by GJ Werkema. Other subject classes: freight car, steel caboose

Burlington Northern steel caboose 10050 backing in a yard at Longmont, Colorado, on December 31, 1989. The former Northern Pacific (NP) car is part of the NP 10050-10099 number series. Photo by GJ Werkema. Other subject classes: freight car, steel caboose