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Writing from New York to A.L. Griffin, president of the Keystone Bridge Company in Pittsburgh, Pa., Carnegie discusses his concern over the a tower to be built for an exhibition, [the World's Fair]. Attached to [Henry] Phipps Jr. to Henry Clay Frick, Dece

December 12, 1891

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Writing from New York to A.L. Griffin, president of the Keystone Bridge Company in Pittsburgh, Pa., Carnegie discusses his concern over the a tower to be built for an exhibition, [the World's Fair]. Attached to [Henry] Phipps Jr. to Henry Clay Frick, Dece