Hilton later published a series of articles about Castro's (1959) revolution in the "Hispanic American Report" that were written by Herbert Matthews and which the NYT had declined to publish because it felt that Matthews had grown too close to the Cuban leader. He founded the World Association of International Studies (WAIS) in 1965 (originally known as California Institute of International Studies (CIIS)), a global political, economic and religious forum, after resigning as the Director of the Institute of Hispanic American and Luso-Brazilian Studies (Bolivar House), which he had founded earlier at Stanford University. Hilton continued in his post as the Professor of Romanic Languages at the Stanford University until he retired at the mandatory age of 65.