 Rudolf Těsnohlídek began to write down his adventures on the basis of conversations with him.Pavel Eisner continued but did not finish and later Bedřich Golombek and Edvard Valenta completed the work.The book "Třicet let na zlatém severu" ("Thirty Years in the Golden North") had great success in Czechoslovakia and also abroad, where people suspected that "Eskymo Welzl" did not exist and that the real author was Karel Čapek, who wrote the preface to foreign editions.