His first books, Parnaso de Além-Túmulo, containing 256 poems attributed to deceased poets, among them, two being the Portuguese , and and the Brazilians , and , was published for the first time in 1932; the book caused strong admiration and controversy among the literary circle from that time.
He never admitted to be the author of any of his books.
According to a survey from 1990, performed by the Spiritist Medical Association of São Paulo, the letters always contained much informations that was somehow familiar to the readers for whom the letters were intended, and 35 per cent of them carried an identical signature to the signature of the deceased.