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Tower Bridge over the Thames River in London, England. Opened in 1894. Remains an Important Traffic Route with 40,000 Crossings Every Day.
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Rolla
Rolla The old Phelps County Courthouse, Rolla, Mo.

Rolla

Missouri, United States
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Rolla, city, seat (1861) of Phelps county, south-central Missouri, U.S. It is located in the Ozark Mountains, near the Gasconade River and units of the Mark Twain National Forest (headquartered at Rolla). Originating about 1856 as a construction site for the St. Louisā€“San Francisco Railway, it supposedly derived its name from a phonetic spelling of Raleigh, North Carolina, home of one of the settlers. It was a Union stronghold during the American Civil War. The...

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