Search Only Images Download this image Portrait of James Ferguson No info available for book source. Image ID: SIL-SIL14-f002-02 Supplied Caption: Portrait of James Ferguson. Mezzotint , 1776. After John Townsend, fl. 1776-1778. Tags: Astronomy, Scientific Instruments, Ferguson, James (1710-1776) Categories: Science Collection(s): Scientific Identity No Copyright - United States Request copy of image How can I use this image?