Dumbarton Oaks
Dumbarton Oaks is a mansion or research library.
Also recorded as Dumbarton Oaks Research Library and Collection.
In detail
Recorded constituent parts are Dumbarton Oaks gardens.
It is associated with United States. The record gives 1940 as its date of establishment or first appearance.
It is recorded in the collection of Georgetown.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Dumbarton Oaks”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q1264942: Dumbarton Oaks
Consult the source