Cock-Cornelius House

Listed on the National Register of Historic Places in 2006. 13 historic topographic surveys show this location, the earliest from 1897.

From the record

“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 U-shaped wood-frame dwelling sheathed in wood shingles.”
Wikipedia article Cock-Cornelius House, CC BY-SA 4.0.

One of 156 National Register listings published here for Nassau County · listed in 2006 · category: Building.

Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service

The listing

What is counted as historic. The nomination lists 1 building as contributing to the listing.
Listed as. Cock--Cornelius House - the National Register files a house under its owner's surname.
Address. 34 Birch Hill Rd., Locust Valley, 11560
When was it listed? March 2006
Category. building
Town. Oyster Bay town
Architectural style. Federal architecture
National Register reference number. 06000157 - the number the National Park Service assigned this property when it was listed, and the key its nomination file is catalogued under at the National Archives.

Fires near this property

248 since 1994

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 248 fires within 5 miles of Cock-Cornelius House between 1994 and 2020, burning about 106 acres in total. 17 started naturally. 25 were recorded as arson. Distance is straight-line from the map coordinates, so a fire counted here may appear on a neighbouring settlement's page as well.

Reported cause	Fires
Missing data/not specified/undetermined	112
Smoking	45
Arson/incendiarism	25
Power generation/transmission/distribution	20
Natural	17
Debris and open burning	12
Equipment and vehicle use	6
Recreation and ceremony	6
Misuse of fire by a minor	5

The most recent of them, most recent first, with the day each was reported and the service that recorded it.

Date	Cause	Size	Reported by	Name on the report
8 September 2017	Equipment and vehicle use	under an acre	Fire Department of New York	N/A
7 September 2009	Debris and open burning	under an acre	Fire Department of New York	not named
7 September 2002	Smoking	under an acre	Fire Department of New York	not named
6 September 2016	Power generation/transmission/distribution	2.3 acres	Fire Department of New York	N/A
4 September 2016	Arson/incendiarism	under an acre	Fire Department of New York	N/A
4 September 2003	Smoking	under an acre	Fire Department of New York	not named
30 September 2007	Missing data/not specified/undetermined	under an acre	Fire Department of New York	not named
25 September 2019	Missing data/not specified/undetermined	under an acre	Fire Department of New York	N/A

Every fire recorded in Nassau County

Mines and quarries near this property

3 within 5 miles

Regional context, not property-specific evidence. The federal mineral resources record lists 3 workings within 5 miles of Cock-Cornelius House: 2 past producers, 1 unknown. None of them still produces. What was taken out: Sand and Gravel, Construction, Tungsten. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Site	Commodity	Status	Recorded
L I Tungsten Corp/ Glen Cove, N.Y.	Tungsten	Unknown
Port Washington Pit	Sand and Gravel, Construction	Past Producer
Port Washington Pit and Mill	Sand and Gravel, Construction	Past Producer	Sedimentary

Every working recorded in Nassau County

Maps showing this location

13 surveys

United States Geological Survey topographic sheets whose coverage includes this point. Matched by taking the coordinate the National Park Service records for this property, then testing that coordinate against the published boundary of every sheet.

1897 USGS Oyster Bay quadrangle1:62500
1898 USGS Oyster Bay quadrangle1:62500
1900 USGS Oyster Bay quadrangle1:62500 - 15 printings
1947 USGS Hicksville quadrangle1:24000
1949 USGS New York quadrangle1:250000
1954 USGS Hicksville quadrangle1:24000 - 2 printings
1954 USGS New York quadrangle1:250000 - 2 printings
1957 USGS New York quadrangle1:250000
1958 USGS New York quadrangle1:250000 - 3 printings
1960 USGS New York quadrangle1:250000 - 2 printings
1967 USGS Hicksville quadrangle1:24000 - 3 printings
1969 USGS New York quadrangle1:250000
1984 USGS Long Island West quadrangle1:100000 - 2 printings

Listed places nearby

6 within 8 miles

Other National Register properties close enough to walk or drive between, ordered by distance from this one. Both positions come from the same geocoding pass that matched these properties to their map sheets.

Property	Distance	Listed
Matinecock Friends Meetinghouse	0.6 miles	1976
Schmidlapp-Humes Estate Historic District	1.0 miles	2020
Lillian Sefton Dodge Estate	1.5 miles	1979
George Underhill House	1.6 miles	2003
House at 52 Frost Mill Road	1.6 miles	2011
Planting Fields Arboretum	1.8 miles	1979

Sources for this property

National Archives record	The nomination case file for reference 06000157 in Record Group 79.
Wikipedia article	Community-written account of this property, licensed CC BY-SA.
Nassau County	All 156 listed properties in this county.

Provenance

Listing record. National Park Service National Register of Historic Places, listed-properties dataset, current to 2026-05-22.
Map join. Address geocoded through the United States Census geocoder, then tested against the published boundary of every sheet in the USGS Historical Topographic Map Collection.
How this page is made. Listing fields come from federal records; map-sheet coverage is a labelled coordinate-to-boundary calculation, not a source-field claim.
Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.
Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.