Tuesday, February 12, 1963: Gateway Arch

Construction begins on the Gateway Arch in St. Louis, Missouri, symbolizing the westward expansion of the United States in the 19th century. (The structure would be completed in October 1965; photo from July 1965.)

* www.gatewayarch.com: @

* Jefferson National Expansion Memorial (from National Park Service): @

* "The Incredible Gateway Arch" (Popular Mechanics, December 1963): @

* Exhibit on Eero Saarinen, who designed the arch (www.eerosaarinen.net): @

* "Eero Saarinen: An Architecture of Multiplicity" (Antonio Roman, 2006): @ 

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