International Bernard Bolzano Society - Association of scholars interested in the works and legacy of Bolzano. Organizational, membership and contact information. - http://www.uni-salzburg.at/portal/page?_pageid=1225,423385&_dad=portal&_schema=PORTAL
Bolzano, Bernhard - Catholic Encyclopedia - Biograaphy of the mathematician and philosopher, b. at Prague, 5 October, 1781; d. 18 December, 1848. - http://www.newadvent.org/cathen/02643c.htm
Bolzano, Bernhard - Biography of the mathematician and philosopher. From Interactive Real Analysis. - http://www.shu.edu/projects/reals/history/bolzano.html
Bernard Bolzano - Wikipedia - Biography of the philosopher and mathematician. With links to relevant terms. - http://en.wikipedia.org/wiki/Bernhard_Bolzano
Bernard Bolzano: Pedagogue - A brief paper by Helena Lorenzova, giving an overview of Bolzano's teachings. From the Paideia Project. - http://www.bu.edu/wcp/Papers/Teac/TeacLore.htm
The Philosophy of Bernard Bolzano - Excerpts from the works by Bernard Bolzano and an extended bibliography of studies on his work - http://www.formalontology.it/bolzanob.htm
Bolzano, Bernard (1781-1848) - Biography from MacTutor History of Mathematics Archive. - http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Bolzano.html
The Bernard Bolzano Pages - From Salzburg University. - http://www.sbg.ac.at/fph/bolzano/bolzano.htm