Asmat people were fearsome warriors and cannibals. In November 1961, the 23-year-old Michael Rockefeller, son of Nelson Rockefeller (Vice-President of the United States), was a passionate lover of tribal art. He disappeared in Papua, while looking for Asmat art. His disappearance, followed by an intensive and ultimately unsuccessful search, was the source of much speculation. Carl Hoffman in his book Savage Harvest presented evidence that Rockfeller was killed and eaten by Asmat.