Mindaugas i. posters & prints

Mindaugas, King of Lithuania Anonymous

Allied victims of a poison gas, temporarily blinded, at a French hospital Anonymous

Portrait of Charles I Daniel Mytens

Adolescent I George Minne

Gas protection, France, World War I Anonymous

British soldiers advancing under cover of gas and smoke, France, World War I Realistic Travels Publishers

Matthias I, Hunyadi Anonymous

Gunners wearing gas masks, World War I Realistic Travels Publishers

Infantry fitted with the latest gas marks and steel helmets, World War I Realistic Travels Publishers

George I. King of Greece and His Queen the Grand Duchess Olga Constantinovna of Russia 1867 Anonymous

British gunners donning masks as protection against German gas shells, World War I Realistic Travels Publishers

False Dmitry I in the Adam Wisniowiecki House, 1876 Nikolai Vasilyevich Nevrev

King George I of Greece W&D Downey

False Dmitry I Anonymous

A Chlorine Gas Attack Lucien Jonas

George I, King of Greece Anonymous

Emperor John I Tzimiskes meeting with Ambassadors of Sviatoslav I of Kiev Anonymous

Verdun Anonymous

Gas Alarm!, Loos, France, World War I Realistic Travels Publishers

Initial I: Saint Mark Master of the Dresden Prayer Book

Mircea I of Wallachia Anonymous

Philippe I, Duke of Orléans Pierre Mignard

Initial I: Saint Matthew Master of the Dresden Prayer Book

Trench warfare, Bourlon Wood, France, World War I Realistic Travels Publishers

False Dmitry I Anonymous

Portrait of Alexander I, Prince of the Netherlands Jan Dam Steuerwald

Portrait of Empress Catherine I., 1712 Andreas Møller

Nicholas I (1841-1921). Prince (1860-1910) and King of Montenegro (1910-1918). Anonymous

Alexander I as God Rodomysl, 1816-1834 Fyodor Petrovich Tolstoy

Portrait of Emperor Nicholas I Ivan Andreyevich Winberg

Initial I: The Rebuilding of the Temple Anonymous

False Dmitry I, 1607 Anonymous

British troops advancing through gas, Passchandaele, Ypres, Belgium, World War I Realistic Travels Publishers

King William I of Prussia Anonymous

King George I of Greece with Commodore Keppel and Lord Howe, Corfu, Greece Queen Alexandra

Alexander I 19th-Century Engraving Anonymous