Prints -- Andresen (Andreas): Der Deutsche Peintre-Graveur, [New York, n.d.], 5 vols., 8vo, reprint of the 1864-78 Leipzig edition -- British Museum. Willshire (William Hughes): A Descriptive Catalogue of Early Prints in the British Museum. German and Flemish Schools, London, 1879-83, 2 vols., 8vo -- Passavant (J.D.): Le Peintre-Graveur, New York, [n.d.], 6 vols. in 3, 8vo, reprint of the 1860 edition -- Oppermann Collection. Katalog der Sehr Reichen Kupperstichsammlungen des Herrn E.F. Opperman, versteigerung, Berlin, kunst-Auctionshause von Rudolph Lepke, 1882, 8vo, printed price list bound in, contemporary half morocco; and 7 others of related interest. (16)