Bismarckarchipel-Gesellschaft mbH (Rubber Culture Syndicate). - Mertens investigations: vol. 1 Add to clipboard BArch, R 1001/2438 File März 1907 - Okt. 1910 Part of Federal Archives (Archivtektonik) In: Bismarckarchipel-Gesellschaft mbH (Rubber Culture Syndicate). - Mertens investigations
Bismarckarchipel-Gesellschaft mbH (Rubber Culture Syndicate). - Mertens investigations: vol. 2 Add to clipboard BArch, R 1001/2439 File (1915) Juni 1926 - Aug. 1928 Part of Federal Archives (Archivtektonik) In: Bismarckarchipel-Gesellschaft mbH (Rubber Culture Syndicate). - Mertens investigations