First published 1885. Luis Nadeau gives a good note on this subject: “Lithography from zinc plates rather than stones. The idea of substituting light weight plates for stones was known for at least half a century before high quality industrial production was achieved by Monrocq who, by the time he was successful in 1875, had spent five years improving the process. Advantages of using zinc over stone as of 1880 were as follows: 80% saving in terms of production cost, 98% less weight, 95% savings in terms of storage volume.” - Encyc of printing, photographic, and photomechanical processes, II, p. 478. (Charles Wood, cat. 167, # 151)
Manuel pratique de lithographie sur zinc