MAKE A MEME View Large Image ...Standard Switch, parallel to track, 2nd west.From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) SI Neg. CCC-2259. Date: na....Standard Switch, parallel to track, ...
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Keywords: history of technology historyoftechnology mining smithsonian probably public domain probablypublicdomain blackandwhite monochrome black and white SI Neg. CCC-2259. Date: na....Standard Switch, parallel to track, 2nd west.From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) SI Neg. CCC-2259. Date: na....Standard Switch, parallel to track, 2nd west.From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution)
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