'Reise journal der expedition am Weissen Flusse-Central Afrika' describing Knoblecher's journey south from Khartoum to Gondokoro and Rejaf, 1849-1850. This is a transcription in German from the original in Codex 14152, 'Biblioteca Palatina Vindobonensis', Vienna, made by Richard Gray for his 'A history of Southern Sudan' (1961).

Letters in German from Austrian Consuls-General at Cairo and their agents at Khartoum dealing with events in Southern Sudan, including the work of the Vicariate of Central Africa, consular returns from Khartoum and provisional instructions for the Consulate at Khartoum, c. 170 pages. The letters were transcribed from originals in the Östereichisches Staatsarchiv in Vienna by Richard Gray for his 'A history of Southern Sudan' (1961).