C. Townsend Ludington Laurence P. Sharples Philip T. Sharples was-and remains-vital to AOPA's clout, and in 1940 this translated into successful fights against hikes in landing fees at New York's La Guardia Field and others. The association also established an Emergency Pilot Registry and formed the AOPA Air Guard-efforts to train pilots to fulfill emergency functions in times of war and national disaster. When the United States entered World War II, AOPA also helped register pilots as required by the federal government, and at the same time fought for access to coastal airspace that would have been otherwise prohibited to general aviation pilots. The association served in a liaison role between civilian pilots and military authorities during the war, ensuring reasonable access to the growing amount of military training airspace. Joseph B. "Doc" Hartranft Jr. John Story Smith Alfred L. Wolf Joseph B. "Doc" Hartranft Jr. The first AOPA Airport Directory is published, later known as AOPA's Airports USA. Membership hits 80,000. 1951 1952 1953 AOPA headquarters moves to the Keiser Building on East-West Highway in Bethesda, Maryland. 1954 1955 1956 1957 1958 1959 1960 AOPA Pilot magazine makes its debut as an independent magazine with publication of the March 1958 issue. 1961 1962 1963 1964 International Council of Aircraft Owner and Pilot Associations, now IAOPA, started by "Doc" Hartranft and Victor Kayne. www.aopa.org/pilot AOPA PILOT | 53http://www.aopa.org/pilot