Achromatic Stereoscope Achromatic Table Stereoscope Brewster, Sir David Casket Chadwick’s Lenticular Stereoscope Chappuis patent Chappuis, Paul Émile Clairvoyant Claudet patent curved sides Claudet viewing case Claudet, Antoine Cooke patent Cosmorama Crystal Palace Exhibition Cube Graphoscope Graphoscope Negretti & Zambra Great Exhibition of 1851 Johns patent Kilburn, William Edward Knight, George & Sons Lothian stereoscope Lowden, George Lyons patent