Detailed manuscript survey of Land's near Assunpink Creek, in Mercer County, New Jersey, 1751.
Property owners named include the Earl of Milford, Loyal's Land, Dockorios Land, and Duke of Perth's Land.
James Drummond, the first Duke of Perth, was a partner with William Penn in the settlement of East New Jersey in 1681. As one of 24 proprietors of a large parcel of property that took up much of what is now the State of New Jersey, Perth sponsored an expedition in 1684 to establish a settlement there. The City of Perth Amboy, New Jersey, which sits on the waterfront facing Staten Island, New York, and which was once a port city in its own right, is named in his honor - a statue of Lord Perth stands in front of City Hall (the "Amboy" comes from an Algonquian word meaning "valley").