The first known color photographs taken after the great San Francisco earthquake of 1906 have been found by the Smithsonian’s American Museum of National History
Almost as interesting as the photos themselves is the incredible process by which they were produced:
The first color process Ives attempted to market was the Photochromoscope system. He employed subtractive color theory to record scenes with a one- shot stereoscopic camera. Ives’ camera system of mirrors and filters behind each lens split and filtered the light to create one pair of slides for each primary color of light (red, green, blue). The slides were bound together in a special order with cloth tapes into a package known as a Krőmgram. The Krőmscőp was the apparatus used to rebuild the image allowing the viewer to see in three-dimensional color.