1852-1853 in Bethanien, Otjikango; letters and diaries from missionary holidays, 1848-1850; letters and diaries from Africa, also from Emmy Haupt (1854 married to Georg Zimmer), Gorth's bride, d. did not find him alive anymore, 1851-1853; transcript from "Hessische Biographien": "Gorth, Matthäus, Missionar, 1823-1853", edited by Hermann Haupt, Darmstadt, 1918; photocopy of the obituary for Matthäus Gorth in the reports of the RMG;