England's widening sphere of influence in eastern North America is reflected on a late 17th century map published in London. By this time, the British had extended their territorial claims from the original Chesapeake and New England colonies into the Hudson and Delaware valleys. The latter areas had been controlled by the Dutch until 1674 when the British captured New Amsterdam (renamed New York in the harbor inset). The map's three contributors, working members of the rapidly growing map trade in London, had access to government sources and records, as well as updated information from traders and sea captains who had recently returned from their voyages. In New England, the map identifies the numerous British settlements in eastern Massachusetts from Boston Harbor south to Cape Cod, along the southern coastal areas, and in the interior along the Connecticut River. Circa 1685.