Becker, Rudolf, Bamenda (Cameroon), Hagen and Stolb Add to clipboard Best. 614, A 409 File 1908-1912 Part of Historical Archive of the City of Cologne (Archivtektonik) Contains: Purchase of an ethnographic collection. old signatures: 409. In: Rautenstrauch-Joest-Museum >> Purchase, exchange and donation of museum objects >> Purchase of ethnographies