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Caption: "Union Pacific Bridge -- Portland," c. 1912. Built in 1912, this through-truss, double-deck, vertical lift bridge crosses the Willamette River in Portland, Oregon.
Date: 1912
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Caption: "Yoho National Park - British Columbia, Canada. Switchback in the highway. 200 ft. climb in 1/3 mile," c. 1935.
Date: 1935