Keywords: stereographs centennial exhibition centennialexhibition philadelphia library company of philadelphia librarycompanyofphiladelphia second industrial revolution secondindustrialrevolution henry pettit henrypettit joseph wilson josephwilson steam power steampower hydraulic power hydraulicpower photo border Philadelphia: Centennial Photographic Co., 1876. Interior view of Machinery Hall. Machinery Hall was designed by Pettit and Wilson and constructed as one of the temporary buildings of the Centennial Exhibition. It showcased the technological advancements of the America's Second Industrial Revolution from steam and hydraulic power to electricity and the internal combustion engine. At the center of attention, the 56-ton flywheel of the Corliss Centennial Steam Engine drove a mile of shafting to provide steam power to exhibitors. P.2011.47.288 Philadelphia: Centennial Photographic Co., 1876. Interior view of Machinery Hall. Machinery Hall was designed by Pettit and Wilson and constructed as one of the temporary buildings of the Centennial Exhibition. It showcased the technological advancements of the America's Second Industrial Revolution from steam and hydraulic power to electricity and the internal combustion engine. At the center of attention, the 56-ton flywheel of the Corliss Centennial Steam Engine drove a mile of shafting to provide steam power to exhibitors. P.2011.47.288 |