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Cock-Cornelius House
U.S. National Register of Historic Places
The historic house, which is a real estate office today.
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Location	34 Birch Hill Rd., Locust Valley, New York
Coordinates	40°52′27″N 73°35′17″W / 40.87417°N 73.58806°W / 40.87417; -73.58806
Area	2.2 acres (0.89 ha)
Built	1841
Architectural style	Federal
NRHP reference No.	06000157
Added to NRHP	March 22, 2006

Cock-Cornelius House, also known as Wyckoff-Underhill House, is a historic home located at Locust Valley in Nassau County, New York. It is a 1- to 2+1⁄2-story, U-shaped wood-frame dwelling sheathed in wood shingles. The main block is 2+1⁄2 stories and five bays wide. The oldest section of the house is dated to the Federal period, about 1790. The house was expanded in the 1840s and in the 1920s-1930s.

It was listed on the National Register of Historic Places in 2006.

References

1. ^ "National Register Information System". National Register of Historic Places. National Park Service. March 13, 2009.
2. Karen Kennedy and Sarah Apmann (November 2005). "National Register of Historic Places Registration: Cock-Cornelius House". New York State Office of Parks, Recreation and Historic Preservation. Retrieved 2010-11-20. See also: "Accompanying 21 photos".

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