5909101 Advertising Chromolithography of chocolates Guerin Boutron, THE OLD PARIS, Place du Grand Chatelet (chromolithograph) by French School, (20th century); 36.42x56.57 cm; (add.info.: The Guerin Boutron family from Paris founded the company in around 1775. The factory manufactures chocolate, to retain its customers Guerin Boutron joined his tablets chromolithography on various topics, here LE VIEUX PARIS, Place du Grand Chatelet); Photo by Archives Toutain; French, out of copyright.