Mentz, A. and Ostenfeld, C.H.
Billeder af Nordens Flora with 663 coloured lithographed plates
Copenhagen, G.E.C. Gad, 1917-1927, 2nd revised enlarged edition, 4 volumess., 663 coloured lithographed plates, illustrations, contemporary uniform gilt red halfleather bindings. Volume 1: bookblock loosening and occasionally trifle foxed. Volume 1 and 3 spine-ends slightly worn.