^* I wrote about it for the first time in an article entitled “Crónica de un viaje a la selva” in the magazine Cultura Peruana (Lima: September 1958); then in a lecture published as La historia secreta de una novela (Barcelona: Tusquets, 1971); in Chapter IV of my novel El hablador (Barcelona: Seix Barral, 1987); and in countless reportages and articles as well.