Unidentified photographer / artist n.d. CDV viewer with internal rollers Archives of Modern Conflict OR National Gallery of Canada A later version of a cdv viewer with internal rollers, originally invented in 1865. Smaller and more compact than it's earlier model it measures 5" high, 5 1/2" deep and 9 1/2" in length. Covered in faux leather with the viewing windows fashioned from a molded piece of thermoplastic, the construction is of lesser quality than the earlier versions. Turning the wheels moves the CDVs glued to a gauze ribbon across the viewing frames. Printed on a paper label glued to the underside of the unit, it reads Rotary Photograph Album, improved model, by Barnaby and Millard, Broadway, New York.
