1930
Paul Wolff, 1930
Paul Wolff, 1933
Paul Wolff, 1935
Paul Wolff, 1940
Dr. Wolff & Tritschler OHG, 1930
Dr. Wolff & Tritschler OHG, 1941
Dr. Wolff & Tritschler OHG, 1942
Dr. Wolff & Tritschler OHG, 1934