Abstract

Within the rather large Wittgenstein-collection at the Austrian National Library are 14 letters to Ludwig Wittgenstein from his uncle Paul (1848-1928), written between 1914 and 1923. The last of these letters, written on 1st March 1923, contains a little surprise. On the backside of this letter, the logical remarks and draft graphics which are recorded are obviously penned by the hand of Ludwig Wittgenstein