Benjamin Franklin

From AI:

In 1760, Benjamin Franklin was in London as the agent for the Pennsylvania Assembly, a role he had taken on in 1757. 

His primary goal was to address a tax dispute between the colony and the Penn family, who were the proprietors of Pennsylvania. He also spent time pursuing his interests in science and literature. 

Franklin's presence in London in 1760 was part of a longer stay, as he remained in the city, with a brief return to Philadelphia, until 1775. During this period, he represented not only Pennsylvania but also other colonies like Georgia, New Jersey, and Massachusetts, as they appointed him as their agent. 

Franklin's work in London was multifaceted. 

He engaged in diplomatic efforts, including discussions with British officials and politicians about colonial affairs. He also continued his scientific pursuits, developing his glass armonica in 1761. Furthermore, he maintained his literary activities, contributing to public discussions on various topics, including the future of Canada.

Probably the definitive book: Benjamin Franklin: An American Life, Walter Isaacson, c. 2004.