Keywords: history of technology historyoftechnology mining smithsonian probably public domain probablypublicdomain blackandwhite monochrome vehicle train boxcar freight car outdoor black and white SI Neg. CCC-2683. Date: na....From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) SI Neg. CCC-2683. Date: na....From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) |