Great Northern Boxcar 138039 at Boulder, Colorado, July 14, 1965. Other subject classes: Box car

Great Northern Boxcar 138039 at Boulder, Colorado, July 14, 1965. Other subject classes: Box car

Great Northern Boxcar 138184 at Boulder, Colorado, August 26, 1973. Other subject classes: Box car

Great Northern Boxcar 21307 at Boulder, Colorado, February 28, 1965. Other subject classes: Box car

Great Northern Boxcar 32134 at Boulder, Colorado, April 1967, plywood-sheathed 40' boxcar. Other subject classes: Box car

Great Northern Boxcar 35625 at Boulder, Colorado, June 6, 1978. Other subject classes: Box car

Great Northern Boxcar 36864 at Boulder, Colorado, June 6, 1978. Other subject classes: Box car

Great Northern Boxcar 3779 at Boulder, Colorado, April 12, 1963, freshly painted. Other subject classes: Box car

Great Northern Boxcar 38001 at Boulder, Colorado, February 28, 1965. Other subject classes: Box car

Great Northern Boxcar 38033 at Boulder, Colorado, January 24, 1965. Other subject classes: Box car