Benjamin
Franklin had a printing shop in Philadelphia, PA. A statue of Franklin at his printing press is in Philadelphia and a similar one at the Masonic Homes Masonic Lodge in Elizabethtown, PA.
Benjamin
Franklin heard George
Whitefield preach at a revival meeting in Philadelphia, PA. Franklin did not believe Whitefield could preach in open air and be heard by tens of thousands of listeners.
While
Whitefield preached, he paced towards his shop until he could barely hear what he was saying distinctly, about 500 feet. He then estimated that a crowd of 30,000 could hear him preach in open air (at 2 square feet per person). The actual number would be about 29,000 square yards, ignoring other acoustic factors.