Iconclass: An Iconographic Classification System. Waal, H. van de. 9 systems bound in 12 vols. Amsterdam, North-Holland Publishing Co., 1981 ff.

Contains 9 general headings, which are subdivided to classify numerous types of artistic subject matter. Each system has an accompanying bibliography. An explanation of the taxonomic rationale can be found at the beginning of the volume containing System 2-3. The Systems are:
1) the Supernatural, God and Religion;
2) Nature;
3) Human Being;
4) Society, Civilization;
5) Abstract Ideas and Concepts;
6) History;
7) the Bible 8) Sagas, Legends, Tales; 9) Classical mythology and antiquities

Decimal Index of Art in the Lowlands (DIAL). Devised by H. van de. 9 systems bound in 12 vols. Netherlands Art History Institute (RKD), 1950-.

An illustrated postcard index of Dutch and Flemish art, 15th through 18th centuries, with a systematic analysis of the subject matter, cross indexed.

Index Iconologicus. Compiled by the Art Department, Duke University, under the guidance of Dr. Karla Langedijk.

An illustrated card index based mainly on the prints catalogued by A. van Bartsche (Le peintre-graveur, 21 v., Wurzburg, 1920). The Index contains a systematic analysis of subject matter with copius cross-references.