1930–1935
Paul Wolff, 1930
Paul Wolff, 1933
Dr. Wolff & Tritschler OHG, 1942
Dr. Wolff & Tritschler OHG, 1930
Dr. Wolff & Tritschler OHG, 1933
Paul Wolff, 1935
Paul Wolff, 1937
Dr. Wolff & Tritschler OHG, 1940