Never published, the German version of Kraus's lectures are available in C.2, Alexius Meinong-Institut: Forschungsstelle und Dokumentationszentrum für Österreichische Philosophie, Graz Austria. In addition to what is described as 'probably a complete copy' (C.2.1), the file contains a number of drafts and notes (C.2.2–C.2.16).