The Publication of an Encyclopedia of the Size of the Encyclopaedia Iranica is an enormous undertaking in terms of conception and the logistics of its execution. Under the general editorship of E. Yarshater and the managing editorships of the distinguished philologists C. Brunner and P. O. Skjærvø, extensive coverage of the Old and Middle Iranian languages and literatures was assured. In a work of such grand proportion engaging the best scholars from all over the world, information on language and literature is dispersed throughout. Anyone using the EIr needs to be aware that in many cases only a fraction of what one might want to find on a given subject may be under that heading specifically. For example, the subject of Avestan (henceforth Av.) is covered most extensively under that heading, but the various Yashts will be found as separate entries under the names of the Yashts. Lexical items will be scattered, sometimes in places that it takes some ingenuity to find.