Although as an organization it did not espouse any particular theory, it was strongly oriented in a general way toward a hyperdiffusionist view that pre-Columbian contact had been extensive.
It was greatly influenced by the work of Barry Fell.
ISAC was founded by Dr. Joseph B. Mahan a professional anthropologist whose career was primarily devoted to work in museums.
[1] Headquartered in Columbus, Georgia, ISAC's activities consisted of holding an annual conference and of publishing books advocating the hyperdiffusionist view.
ISAC continued holding annual conferences after the death of its founder and President Dr. Mahan in 1995.