| Europe • France | The first issue of Revue Photographique des Hopitaux de Paris appears. Edited by Dr. A. de Montmeja, a Parisian ophthalmologist and pioneering medical photographer, it is the first medical journal to contain photographs. [Read about] |
| Europe • France | Louis Ducos du Hauron publishes Les Couleurs en Photographie, Solution du Probleme that proposes the subtractive color process. |
North America • USA
| The golden spike is driven at Promontory Point, Utah Territory, linking the Union Pacific and the Central Pacific railroads. This completes the construction of the first Transcontinental railway in North America and the ceremony is photographed by Andrew J. Russell , Alfred Hart and Charles Roscoe Savage. (10 May 1869) |
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