LSE4329899 The team of topographers with their material, of the American geological mission, engraving after the drawing of F.Riou, illustrating a set of geographic missions through the United States National Park, from 1870 to 1872, by Messrs Hayden, Doane and Langford, published in ???e tour du monde??1874, edited by Edouard Charton, Hachette edition, Paris. Selva Collection. by Riou, Edouard (1833-1900); Private Collection; (add.info.: The team of topographers with their material, of the American geological mission, engraving after the drawing of F.Riou, illustrating a set of geographic missions through the United States National Park, from 1870 to 1872, by Messrs Hayden, Doane and Langford, published in ???e tour du monde??1874, edited by Edouard Charton, Hachette edition, Paris. Selva Collection.); Photo by Leonard de Selva.