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This rare map of New Hampshire was prepared from surveys by Samuel Holland - famed engineer who entered British service during the French and Indian War (1754-1763). The map depicts New Hampshire in great detail, illustrating rivers, streams, lakes, elevations, township boundaries, roads, and structures. Two great arcs delineate the boundary of a parcel known as "Mason's Curve." The parcel, owned by John Mason (1586-1635), was originally located between the Merrimack and Kennebeck Rivers, however in 1748 was sold by one of Mason's descendants to twelve investors from Portsmouth. It is believed these investors commissioned the surveys in 1768-69 to more accurately locate the boundary of the landholding.

"Note: The operations of the column under the command of His Excellency Lieutenant General Knyphausen is engraved from a plan drawn on the spot by S. W. Werner, Leiutt. of Hessian Artillery." Includes "references to the column under the command of Lt. Genl. Earl Cornwallis" and "references to the column under the command of His Excellency Lieutt. Genl. Knyphausen."

"Produced for the French Navy, the rare chart displayed here was the best available chart of this region for the time, and was used by all naval forces involved in combat during the American Revolutionary War. The information on this very detailed chart was based primarily on the work of American Anthony Smith, a local Chesapeake Bay pilot of St. Mary's County. The chart was consulted by Admiral de Grasse in his victory over the British off the Chesapeake Capes on September 5, 1781." https://collections.leventhalmap.org/search/commonwealth:z603vv10h