Hans Brandhorst and Peter van Huisstede
The ICONCLASS browser is announced and described. It is a computer supported second edition of 'ICONCLASS, an iconographic classification system' devised by Henri van de Waal and published 1972-1985. Also covered is the ICONCLASS Research and Development Group (IRDG) founded by the Universities of Utrecht and Leiden and the CD-ROM which is being produced by the University of Utrecht and the Dutch Royal Library, in which ICONCLASS is being used to provide a subject index to the Royal Library's collection of sixteenth and seventeenth century printer's devices.