Bernard Bolzano - Wikipedia: Biography of the philosopher and mathematician. With links to relevant terms.
Bernard Bolzano: Pedagogue: A brief paper by Helena Lorenzova, giving an overview of Bolzano's teachings. From the Paideia Project.
Bolzano, Bernard (1781-1848): Biography from MacTutor History of Mathematics Archive.
Bolzano, Bernhard: Biography of the mathematician and philosopher. From Interactive Real Analysis.
Bolzano, Bernhard - Catholic Encyclopedia: Biograaphy of the mathematician and philosopher, b. at Prague, 5 October, 1781; d. 18 December, 1848.
International Bernard Bolzano Society: Association of scholars interested in the works and legacy of Bolzano. Organizational, membership and contact information.
The Bernard Bolzano Pages: From Salzburg University.
The Philosophy of Bernard Bolzano: Excerpts from the works by Bernard Bolzano and an extended bibliography of studies on his work