Ruff, Otto (1871-1939)
Ruff, Otto (1871-1939) Ollendorff, Gerhard
Ruff, Otto (1871-1939) Stein, Victor
Ruff, Otto (1871-1939)
Ruff, Otto (1871-1939) Fischer, Hermann Emil (1852-1919)
Ruff, Otto (1871-1939) Franz, Arthur
Ruff, Otto (1871-1939)
Ruff, Otto (1871-1939) Piloty, Oscar (1866-1915)
Ruff, Otto (1871-1939) Ollendorff, Gerhard
Ruff, Otto (1871-1939)
Ruff, Otto (1871-1939)
Ruff, Otto (1871-1939)
Ruff, Otto (1871-1939)
Ruff, Otto (1871-1939) Piloty, Oscar (1866-1915)
Ruff, Otto (1871-1939)
Ruff, Otto (1871-1939) Piloty, Oscar (1866-1915)
Ruff, Otto (1871-1939) Piloty, Oscar (1866-1915)