Statistics for occurrence #1 of “Philadelphia, Pa.” in entry franklin-benjamin of Harper's Encyclopedia of United States History:

...entor of the Franklin stove (q. v.), which in modified forms is still in use. He was also the inventor of the lightning-rod. Franklin left two children, a son, William, and a daughter. He died in Philadelphia, Pa. , April 17, 1790. In 1752 the Pennsylvania Assembly, yielding to the urgency of public affairs in the midst of war, voted a levy of $500,000 without insisting upon their claim to tax the proprieta...
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