In 1949 Maurice Sandoz wrote about the Tsatsa, the Jivaro's shrunken head (The woman for whom he was obtaining it dies before he can give it to her! His head, thereafter, shrinks while the Tstasa's head expands. The fun in the story precedes these disappointing denouements.). The book containing this and other stories about conversations with the insane, with illustrations by Salvador Dali, is entitled "On The Verge."