Geological map of Europe, exhibiting the different systems of rocks according to the most recent researches and unedited materials, for Keith Johnston's Physical atlas, by Sir Roderick I. Murchison, D.C.L., M.A., F.R.S., F.R.S.E. & c. and James Nicol, F.R.S.E., C.S., prof. of Nat. Hist., University of Aberdeen. Engraved & printed in colours by W. & A.K. Johnston, Edinburgh. William Blackwood & Sons, Edinburgh & London. (1856)
