Contains:- Memoirs of Pierre Mebe, graduate of the Mission School of Mvolyé 1911, then co-worker of Mission Yaunde after 1914-1967, 14 page letters by Katharina Atangana, 1950-1975- letters from Cameroon, 1953-1975- letter by Pierre Mebe with notes on the founding history of the mission station Yaunde, with notes by Baumann, 1970- correspondence with abbé Theodor Tsala, taken from 1970-1976:- Portrait photo of Barthelemy Owona (Cameroon), 1927, taken from U.1-912- Photos by Katharina Atangana (Cameroon), 1970, taken from U.1-913- Photo by Pierre Mebe, 1966, taken from U.1-923

Vol. 1: Letters from Bf. Vieter to P. Hoegn in Jaunde; Part 1 (No. 280), 1900-1902; Part 2 (No. 281), 1903-1905, Part 3 (No. 282), 1905-1908

Vol. 3: Letters from Bf. Vieter to P. Rosenhuber in Yaoundé

Vol. 2: Letters from Bf. Vieter to Father Nekes in Yaoundé