Microfilm. v.1-10 (1923:April-1932:Dec.). 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 41, no. 2]. Filmed with : Geschäftsbericht für das Jahr ... / Arbeiter Sekretariat Halle a.S..