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Curated OER
Wikipedia: National Historic Landmarks in Missouri: Eads Bridge
This steel bridge was built in 1874, at a total length of 6,442 feet (1,964 m). It was designed by Captain James B. Eads, who used a system of cantilevers to allow for the bridge's long length. At the time of its construction, the Eads...
Curated OER
Science Kids: Science Images: Stonehenge, Wiltshire, England
Found in the English county of Wiltshire, Stonehenge is a world famous, prehistoric monument that has been the subject of debate for many years. The stones are believed to have been erected in this special part of England sometime around...