Statistics for occurrence #1 of “Pittsburg, Pa.” in entry stanton-edwin-mcmasters of Harper's Encyclopedia of United States History:

...man; born in Steubenville, O., Dec. 19, 1814; graduated at Kenyon College, Ohio, in 1833; was admitted to the bar in 1836, and acquired an extensive practice in Steubenville. In 1848 he went to Pittsburg, Pa. , where he became a leader in his profession. He removed to Washington in 1857, and was employed by Attorney-General Black to plead important cases for the United States. In December, 1860, he suc...
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