1930–1935
Dr. Wolff & Tritschler OHG, 1940
Dr. Wolff & Tritschler OHG, 1930
Paul Wolff, 1936
Paul Wolff, 1935
Dr. Wolff & Tritschler OHG, 1938
Paul Wolff, 1933
Paul Wolff, 1930
Dr. Wolff & Tritschler OHG, 1937