Wentworth-Gardner House

140 Mechanic St., Portsmouth, New Hampshire. County/parish: Rockingham.

Added to the National Register of Historic Places November 24, 1968. NRIS 68000012.

1 contributing building.

From Wikipedia:

Wentworth-Gardner House

The Wentworth-Gardner House is a historic mid-Georgian house built in 1760 and located at 50 Mechanic Street in Portsmouth, New Hampshire, United States. The house is operated as a museum by the Wentworth-Gardner Historic House Association. It is one of the finest extant examples of high-style Georgian architecture in New England, and played a role in the architectural preservation movement of the early 20th century. It was declared a National Historic Landmark in 1968.

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National Park Service documentation: https://catalog.archives.gov/id/77844584