Kai Donner (1888-1935) was a Finnish linguist, ethnographer, explorer, author and national activist, who completed two journeys to Siberia in 1911-1913 and 1914. In the field he took several hundred photographs, a selection f which is here made available as high-quality reproductions, conveying the true spirit of his fieldwork - a full century ago. To accompany the photographic documentation, this volume contains articles devoted to various aspets of Kai Donners legacy, with the focus on his role as a specialist in multidisciplinary Siberian studies within the paradigm of Northern Ethnography.