Wessels I. E. On Recognizing and Collecting Engravings: A Guide for Amateurs. In Russian (ask us if in doubt)/Vesseli I. E. O raspoznavanii i sobiranii gravyur: Posobie dlya lyubiteley. Translation by S. S. Shaikevich. With two tables of monograms by M. M. Lavrov and Co. 1882 XII, 368, 6c. SKUalb8430a510869d0fd6.