The book presents letters from Russian diplomat K.N. Gulkevich (1865–1935) to Slavic professor Olaf Brock (1867–1961), stored in the collections of the Norwegian National Library in Oslo. The publication is dedicated to the history of Russian-Norwegian socio-political and cultural relations during the First World War, the Russian Revolution and the Civil War, and the letters themselves are one of the monuments of this dramatic era.