Regulation on the Fire-Service-Law issued by the Reich Ministry of Interior [Germany]: “Article 4 – Jews cannot belong to the volunteer fire department. Half Jew cannot be superiors in the department. Berlin 24 October 1939 – The Reich Minister of the Interior, Frick”
1939 Reichsgesetzblatt I, page 2096. Accessed online; Translated by Franziska Wagener 2/19/2016