Letters and station reports from Bogadjim, Sidney, Ragetta & von Heimreise, 1901-1905; letters during work in Meiderich, 1908-1911; certificate of appointment as local inspector, 1914; work report for the winter half-year, 1918/1919; acceptance as evangelist in d. Innere Mission, 1921; Negotiations for the release, 1924; Correspondence, mainly with Heinrich Jopp, Herborn, 1925-1935; death announcement and life data of wife Henriette, née Dielmann, 1937; Correspondence, 1937-1941; death announcement and life dates, 1942; Correspondence with family, 1942; Letter by H. Vedder/Okahandja with 3 poems by Hoffmann from 1890-1893, 1953

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;