Missions-Farmer, 1912-1941 in Okahandja, Omburo, Okombahe, Usakos; Curriculum Vitae, 1904; Curriculum Vitae, Application, Testimonies, 1912-1913; Instruction as Mission Farmer, 1913; Letters and Reports, especially from Omburo, 1913-1921; Examensbericht d. Missions-Seminars, 1928; Correspondence from Usakos, 1931-1939; Message about internment, 1939; Report about the death of Ernst Wilhelm Römer in Kimberley and obituary, 1941; death certificate and obituary for Mrs. Rosa Johannette Römer, née Huppert, 1956;

Curriculum vitae, 1929; instructions and vows of secondment, 1930; correspondence and reports (also during internment), 1928-1970; travelogue, 1930; monthly reports, 1932-1940; map of Kijunja, drawn by Martha Söhlke, 1932; language exams and reports. Martha Söhlke assessed by W. Hosbach, 1932; reports from various African hospitals, including Stellenbosch in South-West Africa, 1948-1949; reports from work at Missionshospital Witzieshoek in South Africa, 1949-1967; medical findings, 1957

Curriculum vitae and copies of certificates, 1932; instructions and vows of secondment, 1935; correspondence and reports (also during internment and during work at Transvaal in South Africa), 1933-1962

Curriculum vitae, 1934; instructions and vows of secondment, 1935; biographical data in tabular form, 1953; correspondence and reports (also during internment and while working in Witzieshoek in South Africa), 1934-1977