Paul Klee (1879-1940) is perhaps one of the most significant and best-loved artists of the 20th century. For the nine volumes of this publication, the Berne-based Paul Klee Foundation has researched the artist's 9600 drawings, prints, watercolours, and oil paintings - allowing the artist's complete work to be assembled and published in one complete set. Presenting Klee's oeuvre in chronological order, each volume contains an introduction in German and English, an explanation of the catalogue system, a German-English glossary, a bibliography and indexes. All the entries are illustrated, and include catalogue numbers, technical descriptions, measurements, references to related works, details of provenance and location, relevant literature and a list of exhibitions and auctions in which it has appeared. Klee's own entries from the oeuvre catalogue he wrote from 1911 onwards are also included, and some of the most important works of his career are illustrated in colour. Volume 1 follows Klee from childhood through his years studying painting in Munich until 1912 - the year after he held his first one-man exhibition and made contact with the "Blaue Reiter" artists Kandinsky, Marc and Macke. At this early stage in his career, Klee was working mainly in black and white graphic media, producing etchings bearing the influence of the German Renaissance tradition.