Bibliography:

• Collins, Douglas, The Story of Kodak, Harry N. Abrams Incorporated, New York, 1990


• Ford, Colin, The Story of Popular Photography, Century Hutchinson Ltd, Great Britain, 1989


• Ford, Colin and Steinorth, Karl, You Press the Button, We Do the Rest: The Birth of Snapshot Photography, Dirk Nishen Publishing, London, 1988


• Hammond, John. H, The Cammera Obscura: A Chronicle, Adam Hilger Ltd, Bristol, 1981


• Wilgus, Jack and Beverly, http://brightbytes.com/cosite/what.html, The Magic Mirror of Life and Appreciation of the Camera Obscura, 2004