Keywords: Matthew Boulton02.jpg en Matthew Boulton 1728-1809 Engineer 14 5 x 10 2 cm http //www sil si edu/digitalcollections/hst/scientific-identity/cf/by_discipline_display_results cfm Research_Discipline_1 Engineering William Ridley 1764-1838 engraver 1809-10-02 Public domain PD-old-100 Matthew Boulton |