Template:Pritchard
Pritchard, Michael and St. Denny, Douglas. Spy Cameras — A century of detective and subminiature cameras. London: Classic Collection Publications, 1993. ISBN 1-874485-00-3.
Pritchard, Michael and St. Denny, Douglas. Spy Cameras — A century of detective and subminiature cameras. London: Classic Collection Publications, 1993. ISBN 1-874485-00-3.