1905. Reprint Arch. Ver. Fr. Naturgesch. Mecklenb 59; 46 pp. 1 plt. h.t. folding-out. Orig. wrps. front cover with some unobtrusive discolouring, otherwise, very good.
1885.US Geological Survey, 5th Annual Report; pp. 67-123, 6 fig. 18 plts. h.t. Orig. extract, new wrps. with title shield, very good, 4to. This is the original 1885 print version, not a later reprint.