Sagamore Hill

E92777

historic house historic site museum

Sagamore Hill is the historic Long Island estate that served as President Theodore Roosevelt’s primary home and the “Summer White House” during his presidency.

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All labels observed (6)

Label	Occurrences
Sagamore Hill National Historic Site	7
Sagamore Hill canonical	4
Sagamore Hill National Historic Site (in partnership with the National Park Service)	1
Sagamore Hill estate	1
Sagamore Hill, Oyster Bay, New York	1
Theodore Roosevelt’s home at Sagamore Hill	1

How this entity was disambiguated

This entity first appeared as the object of triple T734118 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Sagamore Hill
Context triple: [Theodore Roosevelt, residence, Sagamore Hill]

A. Roosevelt’s Little White House
Roosevelt’s Little White House is the historic retreat in Warm Springs, Georgia, where President Franklin D. Roosevelt sought polio treatment, spent much of his presidency, and ultimately died in 1945.
B. Woodrow Wilson House
Woodrow Wilson House is a historic museum in Washington, D.C., preserved as the former residence of U.S. President Woodrow Wilson after his presidency.
C. Harry S. Truman Little White House
The Harry S. Truman Little White House is a historic residence and museum in Key West that served as President Harry S. Truman’s winter White House and retreat.
D. Eleanor Roosevelt National Historic Site
Eleanor Roosevelt National Historic Site is a preserved estate in Hyde Park, New York, that commemorates the life and legacy of former First Lady Eleanor Roosevelt, featuring her home, Val-Kill Cottage, and surrounding grounds.
E. Hillwood
Hillwood is a real estate development company known for large-scale industrial, commercial, and mixed-use projects across the United States.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Sagamore Hill
Target entity description: Sagamore Hill is the historic Long Island estate that served as President Theodore Roosevelt’s primary home and the “Summer White House” during his presidency.

A. Roosevelt’s Little White House
Roosevelt’s Little White House is the historic retreat in Warm Springs, Georgia, where President Franklin D. Roosevelt sought polio treatment, spent much of his presidency, and ultimately died in 1945.
B. Woodrow Wilson House
Woodrow Wilson House is a historic museum in Washington, D.C., preserved as the former residence of U.S. President Woodrow Wilson after his presidency.
C. Harry S. Truman Little White House
The Harry S. Truman Little White House is a historic residence and museum in Key West that served as President Harry S. Truman’s winter White House and retreat.
D. Eleanor Roosevelt National Historic Site
Eleanor Roosevelt National Historic Site is a preserved estate in Hyde Park, New York, that commemorates the life and legacy of former First Lady Eleanor Roosevelt, featuring her home, Val-Kill Cottage, and surrounding grounds.
E. Hillwood
Hillwood is a real estate development company known for large-scale industrial, commercial, and mixed-use projects across the United States.
F. None of above. chosen

Statements (45)

Predicate	Object
instanceOf	historic house ⓘ historic site ⓘ museum ⓘ
addedToNationalRegisterOfHistoricPlaces	1966 ⓘ
architecturalStyle	Queen Anne architecture ⓘ
area	approximately 83 acres ⓘ
associatedWith	Roosevelt family ⓘ Theodore Roosevelt ⓘ
category	Historic house museums in New York ⓘ National Historic Sites in New York ⓘ Presidential homes in the United States ⓘ
completedIn	1885 ⓘ
constructionStart	1884 ⓘ
country	United States of America ⓘ
designation	National Historic Site ⓘ
hasFeature	Roosevelt’s library ⓘ Roosevelt’s trophy room ⓘ meadows ⓘ orchards ⓘ wooded grounds ⓘ
hasFunction	historic house museum ⓘ house museum ⓘ
hasOutbuilding	Old Orchard home ⓘ
locatedIn	Long Island ⓘ Nassau County, New York ⓘ Oyster Bay ⓘ surface form: Oyster Bay, New York
managedBy	United States Department of the Interior ⓘ surface form: U.S. Department of the Interior
namedAfter	Sagamore (Algonquian term for chief) ⓘ
nearestCity	Oyster Bay ⓘ
notableResident	Edith Kermit Carow Roosevelt ⓘ Theodore Roosevelt ⓘ
numberOfRooms	23 ⓘ
openToPublic	true ⓘ
operatedBy	National Park Service ⓘ
owner	Theodore Roosevelt ⓘ
partOf	Sagamore Hill self-linksurface differs ⓘ surface form: Sagamore Hill National Historic Site
periodOfUseAsSummerWhiteHouse	1902–1908 ⓘ
significantEvent	site of many presidential meetings and decisions during Theodore Roosevelt’s presidency ⓘ
timePeriodOfSignificance	early 20th century ⓘ late 19th century ⓘ
tourType	guided house tours ⓘ self-guided grounds tours ⓘ
usedAs	Western White House ⓘ surface form: Summer White House primary residence of Theodore Roosevelt ⓘ
usedBy	Theodore Roosevelt ⓘ

How these facts were elicited

Referenced by (15)

Full triples — surface form annotated when it differs from this entity's canonical label.

Theodore Roosevelt → residence → Sagamore Hill ⓘ

New York State Office of Parks, Recreation and Historic Preservation → operates → Sagamore Hill ⓘ

this entity surface form: Sagamore Hill National Historic Site (in partnership with the National Park Service)

Youngs Memorial Cemetery → hasNearbyAttraction → Sagamore Hill ⓘ