Early Charts of Long Island

Thornton 1685 Map (Original map is in the John Carter Brown Library at Brown University)
Thornton Map 1685

Thronton 1685 Map - Detail of the East End of Long Island
Thornton Map 1685, Detail

Survey of Gardiner's Island from 1722
Earliest Known Survey of Gardiner's Island from 1722 showing Gardiner's Island, but not including the beaches.