Loetz - six reference books on Loetz Glass,prising:-Lötz. Böhmisches Glas 1880–1940, 2 volumes (Band 1 & Band 2), Ricke, Helmut, published by Prestel, 1989; together with 'Loetz / Series II, Paper Patterns for Glass from 1900-1914' by Jitka Lneničková, published by Muzeum Šumavy, Sušice, 2011; and Loetz - Bohemnian Glass 1880-1940 by Mergl, Ploil and Ricke, published in 2003 by Neue Galerie New York and Hatje Cantz publishers; together with Loetz Austria 1900 and Loetz Austria 1905-1918 by Waltraud Neuwirth, published by the author, Vienna 1986, (6)Used condition, but sound and in good order.