Keywords: history of technology historyoftechnology mining smithsonian probably public domain probablypublicdomain blackandwhite monochrome outdoor vehicle truck black and white SI Neg. CCC-2745B. Date: 7/28/1926....Big Mack Truck Loaded with Lumber.Big Mac Truck Dumping Load ofLumber.From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) SI Neg. CCC-2745B. Date: 7/28/1926....Big Mack Truck Loaded with Lumber.Big Mac Truck Dumping Load ofLumber.From the Consolidation Coal Company collection, National Museum of American History...Credit: unknown (Smithsonian Institution) |