Correspondence with Institute of Refrigeration (UK) and the International Institute of Refrigeration (Institut International du Froid), 1937-1949 Including correspondence on the meeting of the 1st International Commission of the International Institute of Refrigeration (Institut International du Froid), to discuss liquid helium (1938) and arrangements for the International Institute of Refrigeration meeting at Lovain in 1949. Also including correspondence with the British Association of Refrigeration Correspondents include: WH Keesom 1937-1949