In 1907, American photographer Alfred Stieglitz (1864 – 1946) traveled to Europe where he was introduced to the newly marketed Autochrome Lumière color photography process. Originally patented in France in 1903, the autochrome process received a U.S. patent in 1906.
Likely in 1910 at Oaklawn, the family home in Lake George, Stieglitz experimented with the Autochrome process. Included here, among others, are portraits of Stieglitz and his family.
(Photos: Alfred Stieglitz/Georgia O'Keeffe Archive, via vintage everyday)