Statistics for occurrence #1 of “Bucks county, Pa.” in entry ellicott-andrew of Harper's Encyclopedia of United States History:

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Civil engineer; born in Bucks county, Pa. , Jan. 24, 1754. His father and uncle founded the town of Ellicott's Mills (now Ellicott City), Md., in 1790. Andrew was much engaged in public surveying for many years after settling in Baltimore...
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