Search Only Images Download this image Portrait of Benjamin Martin No info available for book source. Image ID: SIL-SIL14-m001-16 Supplied Caption: Portrait of Benjamin Martin. Engraving , published by Gentleman's Magazine, 1785. From Gentleman's Magazine, August 1785. Original Caption: From Gentleman's Magazine, August 1785. Tags: physics, Martin, Benjamin (1705-1782) Categories: Science Collection(s): Scientific Identity No Copyright - United States Request copy of image How can I use this image?