Statistics for occurrence #1 of “United States” in entry emory-william-helmsley of Harper's Encyclopedia of United States History:

...gineers July 7, 1833; was aide to General Kearny in California in 1846-47, and was made lieutenant-colonel, Sept. 30, 1847. He was astronomer to the commission to determine the boundary between the United States and Mexico. He was serving as captain of cavalry in Mexico when the Civil War broke out, and brought his command into Kansas in good order. In May, 1861, he was made lieutenant-colonel of the 6th...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
United States (United States) 100,886 16,340 0 0 0 user votes
United States (New Mexico, United States) 6 0 0 0 0 user votes

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