Halley Bay expedition, file 'Correspondence and papers relating to the International Geophysical Year' File from the Royal Society International Geophysical Year expedition to Halley Bay. Correspondence and minutes relating to the early organisation of the IGY. The correspondence is mostly to and from D C Martin, Assistant Secretary of the Royal Society. Includes a copy of minutes of the second meeting of the Canadian International Geophysical Year Committee. Correspondents include Sir Graham Sutton. January - May 1955