with Paul Delaroche
1849 – photographs Fontainebleau Forest
1850 – publishes Practical Treatise of Photography on Paper and Glass (Traité pratique de photographie sur papier et sur verre) describing his variant of the dry waxed paper negative process and a recipe for collodion on glass negatives
1851 – teaches photography at Barrière de Clichy (Paris); founds Heliographic Society (Société Héliographique) and French Photographic Society (Société Française de Photographie); contributes to Missions Héliographiques, a venture to record ancient monuments organized by the French Commission for Historic Monuments
1855 – establishes studio on the Boulevard des Capucines (Paris)
1857 – commissioned by Napoleon III to record opening of the Camp de Châlons
1860 – closes Le Gray and Company; sails to Egypt with author Alexander Dumas
1869 – begins teaching drawing and painting at Cairo's Polytechnical Institute
Switzerland and Italy (1843-44); Sicily (1860); Egypt (1860-1884)
Napoleon III
In the Forest of Fontainbleu, 1851 (Metropolitan Museum of Art, New York)
Factory, Terre-Noire, c. 1851
Mass at the Camp de Châlons, 1857
Aubenas, Sylvie. Gustave Le Gray. London and New York: Phaidon, 2003
Parry, Eugenia. The Photography of Gustave Le Gray. Chicago, IL: University of Chicago Press, 1987