A popular look at the life of John Harrison - the man who invented the first marine chronometer.

But is there even an M. John Harrison and if so, where do we find him? This is the question the author asks in this memoir-as-mystery, turning for clues to forty years of notetaking: “A note or it never happened.

This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations.

This book is an exposition of the lesser-known work of one of the giants of the 18th century longitude story, the maverick clockmaker John Harrison (1693-1776). Harrison's background, methodology, and thinking.