Alexander I Emperor of Russia 1777-1825

Perepiska Imperatora Aleksandra I [i.e. Pervogo] s sestroĭ Velikoĭ kni︠a︡gineĭ Ekaterinoĭ Pavlovnoĭ by Alexander ( Book )
3 editions published in 1910 in French and held by 38 libraries worldwide

Император Александр I [Первый]: опыт историческаго изслѣдованія by Nikolaĭ Mikhaĭlovich ( Book )
5 editions published between 1912 and 1914 in Russian and Undetermined and held by 28 libraries worldwide

Memoirs of Prince Adam Czartoryski and his correspondence with Alexander I. With documents relative to the prince's negotiations with Pitt, Fox, and Brougham, and an account of his conversations with Lord Palmerston and other English statesmen in London in 1832 by Adam Jerzy Czartoryski ( Book )
8 editions published in 1888 in English and held by 28 libraries worldwide

Alexandre Ier et le Prince Czartoryski, 1801-1823 by Adam Jerzy Czartoryski ( Book )
8 editions published in 1865 in French and held by 27 libraries worldwide

Correspondance inédite de l'empereur Alexandre et de Bernadotte pendant l'annee 1812 by Alexander ( Book )
3 editions published in 1909 in French and held by 25 libraries worldwide

Scenes of Russian court life : being the correspondence of Alexander I with his sister Catharine by Alexander ( Book )
3 editions published in 1915 in English and held by 24 libraries worldwide

Imperator Aleksandr Pervyĭ, opyt istoricheskago izsli︠e︡dovanii︠a︡ by Nikolaĭ Mikhaĭlovich ( Book )
4 editions published in 1914 in Russian and held by 23 libraries worldwide

Imperator Aleksandr I by Nikolaĭ Mikhaĭlovich ( Book )
8 editions published between 1912 and 1999 in Russian and held by 22 libraries worldwide

L'empereur Alexandre Ier by Nikolaĭ Mikhaĭlovich ( Book )
9 editions published between 1912 and 2010 in French and Russian and held by 21 libraries worldwide

Diplomaticheskīi︠a︡ snoshenīi︠a︡ Rossīi i Frant︠s︡īi : po donesenīi︠a︡m poslov Imperatorov Aleksandra i Napoleona : 1808-1812 ( Book )
in Russian and held by 20 libraries worldwide