Engraved for Bankes's A New Royal, Authentic, and Complete System of Universal Geography , published by Royal Authority. Phillips, page 865, gives c1787-1810 for publication of Thomas Bankes geography by J. Cook, London. The entire map shows the eastern US and only the Pennsylvania region is shown here. The Delaware counties are included with the state. The treaty of 1784 refers to the end of the Revolutionary War.
Longitude is west from London.
Only the Pennsylvania region is shown. The complete map depicts the east coast and west to the Mississippi. The preparation of this map predates the Revolution because the colonies are named individually. The sources for the map are listed in the title which may indicate they were still alive or recently dead, which would also date it c1785. Despite the Dutch title some features retain English spellings.