License, verbatimUS-PD
The New York Public Library states no known U.S. copyright for this item. Pinax admits it as US-PD only because the work predates 1900, making public domain near-certain worldwide; status outside the U.S. is not asserted and reuse elsewhere is the user's responsibility. Credit: From The New York Public Library.
Grundriss des nördlichen Theils der Neujorks Insel nebst den am 16. Novbr. 1776. eroberten Fort Washington nun das Fort Knÿphausen genannt und dem Fort Lee. 1776 (from title). The New York Public Library.