Biographic entry at Janus

Biographic entry in the Jewish Encyclopedia

Ernst Cassirer biographic entry

Biographic entry from Nordisk familjebok (in Swedish)

Frederick William Elwell biographic entry at the Tate Collection

Biographic entry at the The Society for Irish Latin American Studies website

Biographic entry from Dansk biografisk Lexikon (in Danish)

Biographic entry for Zlatina Deliradeva, Academy of Music, Dance and Fine Arts Plovdiv (choose name from menu).

Biographic entry of Bogusław Kopka at Wydział Administracji i Nauk Społecznych Politechniki Warszawskiej (the Warsaw University of Technology Faculty of History and Social Sciences).

Polish historian Kazimierz Wyka, in his biographic entry in Polski Słownik Biograficzny (1975) writes that this hypothesis, based on the fact that his mother's maiden name, Majewska, was popular among Frankist Jews, has not been proven.

To quote the biographic entry in the 1888 Encyclopædia Britannica, "There he laboured to maintain the discipline of the army, to suppress the rising rebellion, and to protect the people from military oppression, with the care worthy of a great general and an enlightened and beneficent statesman.