Search Only Images Download this image Portrait of Benjamin Silliman No info available for book source. Image ID: SIL-SIL14-s004-07 Supplied Caption: Portrait of Benjamin Silliman. Engraving by William G. Jackman, fl. 1841-1860, published by D. Appleton & Co. Tags: chemistry, geology, Silliman, Benjamin (1779-1864) Categories: Science Collection(s): Scientific Identity No Copyright - United States Request copy of image How can I use this image?