Publisher's statement: "These revised Bloch volumes are now within the "Picasso Project" and follow a similar format to other volumes in the series." This is an authorized revision of the earlier Bloch catalogue (published by Editions Kornfeld & Klipstein, Bern, 1971) with concordances to that, and the other standard references on Picasso's graphic works. The present volume is Vol. 1 of the graphic work and Vol. 16 of the Picasso Project Series. Titles and descriptions are given in English.