December 1, 1925
1 min read
Bridge to Span the Grand Canyon
By Far the Loftiest Structure Ever Planned to Cross from Wall to Wall of the World's Profoundest Gorge
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December 1, 1925
1 min read
Bridge to Span the Grand Canyon
By Far the Loftiest Structure Ever Planned to Cross from Wall to Wall of the World's Profoundest Gorge