“The most important map in American history”

Mitchell’s map is widely regarded as the most important map in American history. Prepared on the eve of the Seven Years’ War (or French and Indian War), it was the second large format map of North America printed by the British (the first being Henry Popple’s map of 1733), and included the most up to date information of the region: ​“the result of a uniquely successful solicitation of information from the colonies” (Edney). Over the following two hundred years, it would play a significant role in the resolution of every significant dispute involving the northern border of the then British Colonies and in the definition of the borders of the new United States of America.