Microfilm. (1919/1920, 1924/1925, 1928, 1930). Madison, Wis. : Collection Preservation Dept., Memorial Library, University of Wisconsin-Madison, 1981-. 1 microfilm reel : negative ; 35 mm. Serial publications of German trade unions in the Memorial Library, University of Wisconsin-Madison. [German Trade Unions ; Reel 52, no. 4]. Filmed with : Jahresbericht (1925) / Verband Deutscher Berufsfeuerwehrmänner.