Official Curtis Centennial Project orotone, number 38/250
Plate 80 from Volume III of Edward S. Curtis’s, The North American Indian, 1905.

“We all know how beautiful the stones and pebbles in the limpid brook of the forest where the water absorbs the blue of the sky and the green of the foliage. Yet when we take the same iridescent pebbles from the water and dry them they are dull and lifeless. So it is with the orthodox photographic print, but in the orotones all that translucency is retained, and they are as full of life and sparkle as an opal.”
Edward Curtis, quoted in the Los Angeles Times, February 2, 1919