Unknown (France?)
Woman in Red, c.1925

Autochromes were the first really practical colour photographs. The process was patented in 1904 by Frenchman Louis Lumière, one of two brothers who helped invent the motion picture. An autochrome is a coloured transparent image on glass, like a slide. This autochrome is a stereograph. When viewed in a stereoscope, the two images combine like human vision and appear three-dimensional.