This volume presents the first compilation of all the works and notes from Nietzsche's personal library up to the beginning of January 1889. It lists the stocks from both the Herzogin Anna Amalia Bibliothek and the Goethe- und Schiller Archiv in Weimar. The critical analysis of other stock lists has revealed numerous further titles which are no longer in existence. In addition, the editors have evaluated all the book invoices and receipts from booksellers and bookbinders kept in the Goethe- und Schiller Archiv. Besides the approximately 2,200 titles from the reconstruction of Nietzsche's library, the volume also contains a catalogue of all traces of Nietzsche's reading (approx. 20,000) such as notes, underlinings and dog-ears. The work is further enhanced with numerous facsimile reproductions together with philosophical, historical and bibliographical introductions, and thus provides an indispensable tool for any future research into Nietzsche and his works.