Publicaciones

Wolff, Gregor (2015):

Adventurer with Bike and Camera: Sumner W. Matteson (1867–1920).

In: id. (ed.): Explorers and Entrepreneurs Behind the Camera. The Stories Behind the Pictures and the Photographs from the Image Archive of the Ibero-American Institute. Berlin: Ibero-Amerikanisches Institut, pp. 136–145. (mit Anja Müller und Gudrun Schumacher)