Search Only Images Download this image Portrait of Bernard Bolzano No info available for book source. Image ID: SIL-SIL14-B5-07 Supplied Caption: Portrait of Bernard Bolzano. Lithograph by Fritz Kriehuber, 1836-1871. After Heinrich Hollpein, fl. ca.1836. Tags: mathematics, Bolzano, Bernard (1781-1848) Categories: Science Collection(s): Scientific Identity No Copyright - United States Request copy of image How can I use this image?