A great design from 1900, Adolf Loos has used this lamp in several Interiors: Turnovsky, Paul Khuner, Lit.: E. Ottillinger, Adolf Loos, Wohnkonzepte und Möbelentwürfe, Salzburg 1994, Abb.: 51, S. 58 - Katalog Adolf Loos, Albertina Wien 1989, S 417, Abb- 188.Most components according to the UL regulations, with an additional charge we will UL-list and label our fixtures.