State Department was integral to Dumbarton Oaks
Delegates of fifty nations met in San Francisco, California, USA, between 25 April and 26 June 1945 at the United Nations Conference on International Organization. Working on the Dumbarton Oaks proposals, the Yalta Agreement, and amendments proposed by various governments, the Conference agreed upon the Charter of the United Nations and the Statute of the new International Court of Justice.
https://www.un.org/en/about-us/history-of-the-un/san-francisco-conference
45 1945-03-20 CBS Harry Marble United Nations Conference In San Francisco - 1945-03-20 CBS Harry Marble - 14:29
https://archive.org/details/1945RadioNews/1945-03-20-CBS-Feature-Story-UN-Conference-In-San-Francisco-Harry-Marble.mp3
[reeeeing internally]