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frequently stayed overnight at her friend's summer home in Dötlingen. It was also in Dötlingen that Feldhusen met Marie Stein-Ranke (1873–1964) [de], regarded
his former fellow-student, Georg Müller vom Siel, and visited him at Dötlingen in June 1908. On a hike in 1889 with his friend, Oskar Frenzel (1855–1915)
Neues Dötlinger Dorfbuch. ISBN 3-87358-113-2 Nils Aschenbeck: Künstlerkolonie Dötlingen. ISBN 3-932292-76-2 Jürgen Derschewsky: Oldenburger Künstler.