With the Commentaria et Lexica Graeca in Papyris reperta, a unique papyrological collection is being published. The otherwise scattered publications of pieces of ancient Greek commentary written on papyrus - i.e. the hypomnemata and notes on Greek authors, glossaries and lexica - are brought together in alphabetical order in this lexicon. In addition to the fragments the lexicon provides the user with details of their place and date of origin, current location and of all publications about them to date (see sample page overleaf). These are followed by commentaries taking into account all available material, written in the language of the respective commentator. This work has been compiled by more than 40 scholars from different European and non-European countries. One or two instalments of 250 to 300 pages each are to be published every two years. The entire work, which will amount to some 15 instalments, is divided into four main parts: I: Commentaria et lexica in auctores; Pars II: Commentaria in adespota; Pars III: Lexica; Pars IV: Concordantiae et Indices. Papyri not published yet are reproduced in the appendix. Not only papyrologists will find an immeasurable fund of source material here; the CLGP will be an essential source of information for every larger classical studies library because of the Greek authors it covers, from Aeschylus to Thucydides.