Adelaide L. T. Douglas House

57 Park Avenue | Murray Hill | built 1911

The city photographed every building for its tax records around 1940 and again in the 1980s. NYC Municipal Archives.

Written with AI from the source each entry cites, then fact-checked.

1911
Horace Trumbauer builds a French Classical mansion tied to a Wall Street affair
Philadelphia architect Horace Trumbauer designed a French Classical limestone mansion in the Louis XVI style at 57 Park Avenue, completed in 1911 for socialite Adelaide Townsend Douglas, replacing an earlier house on the site damaged in the 1902 Park Avenue subway cave-in. Financier J.P. Morgan, with whom Douglas carried on a long affair, is said to have paid the $120,000 construction cost and had a private rear entrance built for his visits.
Source: Daytonian in Manhattan
1935
October 23
Adelaide Douglas dies in the Park Avenue mansion
Adelaide Townsend Douglas died in her Park Avenue mansion on October 23, 1935, at age 83. She had lived apart from her husband, yachtsman William Proctor Douglas, since 1903, though the couple never divorced.
Source: Daytonian in Manhattan
1959
The mansion becomes Olympic House
In 1959 the United States Olympic Committee purchased the former Douglas mansion for its national headquarters, known as Olympic House, and used the building until 1978.
Source: Wikipedia
1979
Guatemala buys the mansion for its UN mission
The Republic of Guatemala purchased the former Douglas mansion in 1979 to serve as its permanent mission to the United Nations, a role the building, since designated a New York City landmark, still holds.
Source: Wikipedia

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