In 1743, when Benjamin Franklin announced the formation of an American Philosophical Society for the Promotion of Useful Knowledge, it was important for the citizens of Pennsylvania to know more about their American Indian neighbors. Beyond a slice of land around Philadelphia, three quarters of the province were still occupied by the Delaware and several other Indian tribes, loosely gathered under the wing of an Indian confederacy known as the Six Nations. Relations with the Six Nations and their allies were being peacefully conducted in a series of so-called “Indian Treaties” that dealt with the fur trade, threats of war with France, settlement of grievances, and the purchase of land.