Greenwood, Ernest H. (of the United States – Deputy secretary general of the conference) / Secretary General: Harold B. Butler (Great Britain) / Deputy Secretaries General: Ernest H. Greenwood (United States) / Guido Pardo (Italy) /Legal Adviser: Manley 0. Hudson (United States) / with staff of the first International Labour Conference, in Washington, D.C., in 1919, in front of the Pan American Union Building