Centre Canadien d´Architecture/Canadian Centre for Architecture (CCA), Montréal

Union catalogue of the libraries of the French national museums
Bibliothéque des Arts décoratifs, Paris

Kunstbibliothek - Staatliche Museen zu Berlin
Art and Exhibition Hall, Bonn
Library of the University of Applied Sciences, Cologne
Academy of Media Arts Cologne
Kunst- und Museumsbibliothek, Cologne
Union Catalogue of Düsseldorf Cultural Institutions
SLUB Dresden - Contemporary Art
Heidelberg University Library (Special Subject Collection in Art History)
documenta Archive, Kassel, Library
Union Catalogue Florence-Munich-Rome
Germanisches Nationalmuseum Nuremberg
ART-Guide (Art history websites)
OLC-SSG Art / Art Science

IRIS Consortium, Florence, Art auctions
IRIS Consortium, Florence

Rijksmuseum Research Library, Amsterdam

Art Library, C. Gulbenkian Found., Lisbon

Bibliothèque d´art et d´archèologie, Geneva
Swiss Institute for Art Research, Library
Kunsthaus Zurich

Getty Research Institute Research Library, Los Angeles
The Metropolitan Museum, New York

National Art Library, Victoria and Albert Museum, London
British Architectural Library (RIBA), London