Premiered with I Sagas värld (1948) as a prefilm on 25 Sept. 1948, in Stockholm, Sweden. (SFI)
The film's manuscript was based primarily on the stories by Albert Engström: "Mysteriet på tullbryggan" and "Julgrisen" (from "Läsebok för svenska folket", published 1938) and "En tullhatare" (from "Mitt lif och lefverne", published in 1907). (SFI)
