Displaying results 121 of 140 - 256
Date Image Innovation City State Country
1905 Cheesman Dam Cheesman Dam Sedalia CO USA
1902 Cortland Street Drawbridge Cortland Street Drawbridge Chicago IL USA
1929 Navajo Bridge Navajo Bridge Page AZ USA
1855 Whipple Truss Bridge Whipple Truss Bridge Schenectady NY USA
1818 Montgomery Bell's Tunnel Montgomery Bell's Tunnel Kingston Springs TN USA
1899 Snoqualmie Falls Cavity Generating Station Snoqualmie Falls Cavity Generating Station Snoqualmie WA USA
1911 Theodore Roosevelt Dam Theodore Roosevelt Dam & Salt River Project Tonto National Forest AZ USA
1728-1821 Emanuel Bowen's 1747 map showing the boundary between Virginia and North Carolina. Royal Colonial Boundary of 1665 Middlesboro KY USA
1871 Druid Lake Dam Druid Lake Dam Baltimore MD USA
1801 Philadelphia Municipal Water Supply Philadelphia Municipal Water Supply Philadelphia PA USA
1864-1869 Chesbrough's Water Supply System Chesbrough's Water Supply System Chicago IL USA
1864 Cabin John Aqueduct Cabin John Aqueduct Cabin John MD USA
1803 Middlesex Canal Middlesex Canal Billerica MA USA
1944 Kentucky Dam Kentucky Dam Grand River KY USA
1833 Charleston - Hamburg Railroad Charleston - Hamburg Railroad Charleston SC USA
1870 Modified Fink trussed Girder bridge Fink Deck Truss Bridge Lynchburg VI USA
1935-1937 Blue Ridge Parkway Blue Ridge Parkway Blue Ridge Mountains VA USA
1829 Chesapeake and Delaware Canal Chesapeake and Delaware Canal New Castle DE USA
1886 Lawrence Experiment Station Lawrence Experiment Station Lawrence MA USA
1959 UTICA MEMORIAL AUDITORIUM Utica Memorial Auditorium Utica NY USA

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