1913-1953 in Rietfontein, Keetmanshoop, Rehoboth; Letters, reports, correspondence with various personalities of the mission leadership, 1912-1966; curriculum vitae, testimonies, 1906 1912; From the History of the Missionary Station, (Rehoboth), 5 p. ms. Fragment, 1945; From people I met on the country road of my life until my 75th birthday, 80 p. ms. (p. 51-64 missing), 1958; Correspondence Siegfried Groth with Wilhelm and Bertha Lind, née Winkel, 1962-1967; obituary for Wilhelm Lind, 1966;

1844-1847 in Capeland, 1848-1852 in Worchester, Otjikango, Okahandja, Otjimbingue, leaving, from 1852 preacher at the Cap, Paarl; sacred poems and songs, composed and recorded by Friedrich Wilhelm Kolbe in his youth, octavheft, not published.Diary for Mr. Eickhoff, Gütersloh, with 7 drawings and explanations, 1847-1848; letters and diaries from various locations, including "Bericht über d. Überfall Jonker Afrikaners auf d. Missions-Station Schmelens Erwartung", 23.08.1850; rehearsal of the Rhine. Missionspresse, 1849; Report on the death of his wife Isabella Kolbe, née Elliott, 1893;

Tropenzeugnisse für Hugo u. Else Schönfeld, née Jung, 1936; curriculum vitae, instructions and vows of secondment, 1937; correspondence, reports, etc., 1936-1965; Personalia Else Jung, married Schönfeld, 1936; "Our Missenyi Work, 1938; 5 photos from Kaagya, 1938; "How a missionary station is created, 1939; "How Lutindi celebrated his 50th anniversary, 1946; "Unser Krankendienst am Oldeani, 1947; Medical records of Hugo Schönfeld, 1947; Ärztliche Befunde Eheleute Schönfeld, 1948