"Inexhaustible wealth, Africans report on their journey to Jesus, 30 p., 1939; obituary of Martin Personn (son), 1939; The districts of Wuga and Bumbuli in the war (towards the end of 1939); deed of ownership of the burial place of Martin Personn in Bethel, 1942; map of Usambara and Buhaya, n.d. ; A walk through the parishes of Usambara and Tanga-Digo today, 8 p. ms.., 1958; death announcement by Hermann Personn, 1960; correspondence with Marie Personn (wife), 1961-1965