#501 What Does the IGY Mean to You? , 06/24/1956.

Dr. Hugh Odishaw, Executive Secretary of the United States National Committee for the International Geophysical Year Rev. Francis J. Heyden, S.J., Director of the Georgetown College Observatory, and Advisor to the United States Air Force for Observation of Solar Eclipses Dr. Albert P. Cracy, Member of the Panel on Seismology and Gravity for the International Geophysical Year and Chief Scientist of the U.S. Antarctic Glaciology Program