American Legislators' Association(1)
Carnegie Endowment for International Peace (1910-)(1)
Internationale Frauenliga für Frieden und Freiheit (1919-)(1)
League of Nations Association (1929-1945)(1)
League of Nations Non-Partisan Association(1)
League of Nations Union (1918-1948)(1)
National Council for the Prevention of War(1)