Contains among other things: Reichskolonialamt: "The Colonial Germans from D e u t s c h - O s t a f r i k a in Belgian Captivity". Print, 1918 "Kriegs-Zeitschrift der Hamburg-Amerika-Linie Nr. 31". Pressure, 10.8.1918 American law against espionage and other political crimes. Print, 15.6.1917 British parliamentary printed matter concerning trade with the enemy, 16.4.1918 "Report of the chief machinist Lehmann about his experiences in Russian-Siberian and English war captivity", without date.

Curriculum Vitae, 1911; Correspondence, 1911-1919; Report(s) on war events in Bukoba and his personal fate as a prisoner of war, 1917; Medical testimonies for Karl Waltermann and his bride Lina Bracht, 1919

Correspondence with Otto Mörchen, 1906-1914; Reports from Rwanda by Otto Mörchen, 1907-1908; Correspondence with Johanna Mörchen, including reports from Kanyangereko and letters from prisoner of war at Camp Oldeano, 1917-1949; Obituary for Johanna Mörchen, 1957; Two cards, watercolours by Johanna Mörchen, o.J.

Correspondence, 1912-1926 and 1950-1951; Medical certificate, 1913; Letters from prisoner of war in Egypt, 1917-1919