 During this expedition Koch also carried out research and made further documentary films in Fiji (in the Sigatoka region) and in Samoa (in Falealupo on the western tip of Savai'i).The films that Koch completed were made available for public exhibition in 1954 by the "Encyclopaedia Cinematographica" in Göttingen, with the films now held by the German National Library of Science and Technology (TIB) in Hanover.Koch visited the atolls of Nanumaga, Nukufetau and Niutao, which resulted in his publication of a book on the material culture of the Ellice Islands.