Encyclopaedia Iranica is a Unique Work. Prof. Ehsan Yarshater and his colleagues have performed a colossal task in preparing and publishing volumes I-VIII. Archaeology, numismatics, pre-Islamic architecture, and art have all been dealt with comprehensively. I have divided the articles into the following groups: 1) Archaeology, architecture, and art; 2) archaeological periods; 3) material culture, architecture and art, and groups of artifacts; 4) monuments; and 5) varia. These articles were written by prominent specialists, many of whom participated personally in the excavations of the relevant monuments or examined them on site.