Schmidt, Alfred, Austrian National Library, Austria

• Volume 1 / Number 1 (Aug 2012), eds. Alois Pichler, Simo Säätelä, Yrsa Neuman - Section iii: From the Archives
  Newly Discovered Wittgenstein Autograph in the Austrian National Library
  Abstract  PDF  HTML
• Volume 3 / Number 1 (Jun 2014), eds. Yrsa Neuman, Martin Gustafsson, Lars Hertzberg - Section iii: From the Archives
  The Wittgenstein Collection of the Austrian National Library
  Abstract  FULLTEXT PDF
• Volume 3 / Number 2 (Dec 2014), eds. Martin Gustafsson, Lars Hertzberg, Yrsa Neuman - Section iii: From the Archives
  Wittgenstein and World War I: some additional online sources
  Abstract  Fulltext PDF