Otto Haeckel

Erich Heckel and Otto Mueller playing Chess, 1913 Anonymous

Washing-up at a juvenile summer holiday camp, Germany Otto Haeckel

Ottokar Pays Homage to Rudolf, 1882 Anonymous

Otto Lilienthal makes one of his last flights Anonymous

Otto Lilienthal, German aeronaut, early 20th century Unknown

Otto von Guericke, German inventor, engineer and physicist, 1672 Unknown

Entrance of Otto of Bavaria into Nauplia, 6th February 1833 German School

Portrait of Otto von Bismark Anonymous

The Stadtbahn Pavilion of the Vienna Underground Railway, design showing the exterior and a view of the railway platform, c.1894-97 Otto Wagner

Otto von Bismarck Carl Ludwig Friedrich Becker

Otto Erich Hartleben German School

Portrait of Otto von Bismarck in Hunting Clothes with his Dog and a Dead Pheasant, 1897 Otto Johann Heinrich Heyden

Joseph Haydn at the grand piano, 1917 Otto Robert Nowak

Portrait of Physicist Otto von Guericke Anonymous

Otto Salzer, 1905(?) Unknown

Portrait of Otto Brahe, Captain of a Company of Danes to Repartition Zealand, Entered Service of Brandenburg in 1610 Anonymous

BISMARCK, Otto-Leopold (1815-1898). Anonymous

Portrait of Prince Otto von Bismarck, 1834 German School

Otto von Bismarck in his Study German School

Otto von Bismarck, Duke of Lauenburg, German statesman Anonymous

Sitting Pair, 1920 Otto Muller or Mueller

Nikolaus Otto Anonymous

Otto von Bismarck, c.1850 German School

Youthful portrait of the young King Otto Greek School

Frederik Daniël Otto Obreen Pieter Koene

Otto von Bismarck as Prussia's Envoy to the Diet of the German Confederation in Frankfurt, 1855 Jakob Becker

Otto I, King of Greece, ca 1835 Gustav Kraus

Otto I Submitting to Berenger II and the Triumph of Italy German School

Portrait of Otto, King of Greece, 1832 Joseph Karl Stieler

BISMARCK, Otto-Leopold (1815-1898). Anonymous

Otto von Bismarck Resigning to Emperor William II Anonymous

Otto I (1848-1916). King of Bavaria (1886-1913). Anonymous

Otto von Bismarck, Chancellor of the Empire at the Tribune of the Reichstag, 1889 French School

Summer Clouds over Gossfelden Otto Ubbelohde

Head, 1913-1914 Otto Gutfreund

The Painter Otto Speckter, c.1831 Gunther Gensler