Karte von Deutsch-Ostafrika mit Haupt- und Nebenzollämtern, mit Karawanenstraßen und darauf den Fahrzeiten in Tagen vom Landesinnere bis zur Küste. 1;nC. L. Keller Geographisch-lithographische Anstalt und Steindruck [printer];nVS u.r. stamp 'Bibliothek des Reichs-Postamts'

Map of the Karibib-Outjo heliograph line in German Southwest Africa (Namibia), after the route survey by First Lieutenant Werner, 1 sheet folded.nWerner, Oberleutnant [photograph/drawing/author] Karsunke [drawing for printing] Verlag der Kgl. Hofbuchhandlung E.S. Mittler & Sohn [publisher] Dietrich Reimer Geographische Verlagshandlung [Ernst Vohsen] [printer];

Map of the German colonies Togo and Cameroon in West Africa, map supplement in the book 'Die Deutschen Kolonien. I. Togo und Kamerun' (Göschen Collection;nEduard Gaebler's geographisches Institut [Lith. u. Druck] Dove, Dr, K. [author of the book];

title: 'Kiepert's wall map of the German colonies. Published by the German Colonial Society. I. Protectorates in Africa. II. protectorate in the Pacific Ocean. III. protectorates in East Asia.'

title: 'Aequatorial-Ost-Afrika.' (3rd corrected edition

title: 'General map of the city of Dar-Es-Salâm and its immediate surroundings. Based on the original photographs of the Surveying Department of the Imperial Government for German East Africa produced in 1892/93 '