Keywords: Polygraphic Society ad 1792.jpg Polygraphic Society in the Critical Review http //books google co uk/books id 8fovAAAAYAAJ pg PA593 img 1 zoom 3 hl en sig ACfU3U37VVhQotDyFSC7MprRpsjO6xof9w ci 98 2C143 2C788 2C765 edge 0 Google Books author author 1792-05-01 PD-old-100 1792 advertisements Advertisements in the United Kingdom |