 He was the Archbishop Emeritus of Buenos Aires for four more years.He died in 1979, at the age of 90, and was buried in the Metropolitan Cathedral of Buenos Aires.In 1961, Caggiano wrote a prologue for the Spanish translation by Juan Francisco Guevara (who later became a colonel) of "Le Marxisme-léninisme", written by Jean Ousset, private secretary of monarchist intellectual Charles Maurras, and founder of the "Cité catholique" fundamentalist organization.