A letter from William Penn, poprietary and governour of Pennsylvania in America, to the Committee of the Free Society of Traders of that province residing in London [electronic resource] : containing a general description of the said province, its soil, air, water, seasons, and produce ... of the natives, or, aborigines, their language, customs, and manners ... of the first planters, the Dutch &c. ... to which is added an account of the city of Philadelphia