Participation of the United States in the international conference to exempt liquid fuel and lubricants used in civil aviation from taxation, London, February 21–March 1, 1939 ¹

^1. The minutes, documents and official instruments of the Conference are printed in Proceedings of the International Conference for the Exemption from Taxation for Liquid Fuel and Lubricants used in Air Traffic, London, 21st February to 1st March 1939 (London, 1939).