Gordon Auchincloss Papers
Auchincloss, Gordon – Secretary to EM House, US Delegate to the Peace Conference, diary, 1919.
Manuscript Group 580, Series I: Diary, 1914–20, Box 2, Folders 28–30 and Box 3, Folders 31–35.

William Wiseman Papers
Wiseman, Sir William – British Agent in the United States.
Manuscript Group 666.

Edward Mandell House Papers
House, EM – US Delegate to the Peace Conference, diary, 1918–19 and correspondence.
Manuscript Group 466, correspondence in Series I, and diaries in Series II (1918–19 are in volumes 13–16).

See the Manuscripts and Archives, Sterling Memorial Library, Yale University website.