1940–1943
Paul Wolff, 1931
Paul Wolff, 1930
Paul Wolff, 1935
Dr. Wolff & Tritschler OHG, 1935
Dr. Wolff & Tritschler OHG, 1930
Dr. Wolff & Tritschler OHG, 1940
Dr. Wolff & Tritschler OHG, 1934
Paul Wolff, 1933