17 titles on German bookplate design: (1) E. Schutt-Kehm. Exlibris-Katalog
Des Gutenberg-Museums. Vol. I. Wiesbaden, Claus Wittal, 1985. Cloth. Lim. ed. of 400. (2) E. Schutt-Kehm. Exlibris-Katalog des Gutenberg-Museums. Vol. II: A-K. Wiesbaden, Claus Wittal, 1998. Cl. (3) Klaus Witte. Exlibris Monogrammlexikon europäische Künstler. Verlag Exlibristen, 1991-'93. 4th ed. 3 vols. + Index. Softcover. (4) Klaus Witte. Exlibris Bibliographie europäische Künstler. Verlag Exlibristen. 1996. 3 vols. Softcover.
-and 13 more on German bookplate art. (total 25)