22nd International Congress against Alcoholism, Helsinki, July 31 - August 4, 1939
23rd Extraordinary Session of the Court - P.V. and Verbatim Record.
23rd Session of the International Institute of Statistics
24th National Peace Congress Birmingham, 22-25 June 1934
24th Session of the International Institute of Statistics
25th National Peace Congress, London, 28 June - 2 July 1935
26th Council meeting: Geneva, August, September 1923 - Minutes of the 25th meeting (private), held in Geneva on September 29, 1923, concerning: (1) the constitution of the Independent Office for Greek Refugees Settlement, and (2) the appointment of substitute members of the Control Board
26th National Peace Congress, Leads 26-29 June 1936
27th Session of Social Weeks of France, Angers, July 22 to 29, 1935
27th Session of the Council: Paris, December 1923 - Notes of decisions taken during this Session