Collection 81/2 League of Nations: communications and transit - Communications affecting the working of the League in times of emergency: aircraft, motor transport, wireless station
Collection 81/3 League of Nations: communications and transit - Arrangements for the transmission of radio messages to governments in times of emergency
Collection 81/6 League of Nations: communications and transit - International Agreement Geneva 13 May 1936 for a uniform system of maritime buoyage, with annexed rules
Collection 81/1 League of Nations: communications and transit - Arrangements to provide for the rapid working of the League organs in case of emergency