Search Only Images Download this image Portrait of Octave Callandreau No info available for book source. Image ID: SIL-SIL14-C1-06 Supplied Caption: Portrait of Octave Callandreau. Photogravure by J. Heuse, published by Héliog. & Imp. J. Heuse. Tags: mathematics, Astronomy, Callandreau, Octave (1852-1904) Categories: Science Collection(s): Scientific Identity No Copyright - United States Request copy of image How can I use this image?