  Wittgenstein dictated some of his thoughts to Schlick, including a strident verificationist series of remarks, and shared several manuscripts with Schlick as well, including (perhaps) his so-called ‘Big Typescript’ of 1932–1933 (Iven 2009, Wittgenstein 2005).  Several other documents survive the period, particularly notes taken by Schlick’s student, Friedrich Waismann, when he accompanied Schlick on his visits to Wittgenstein (McGuinness 1967). In addition, there were joint travels undertaken by Wittgenstein and Schlick during the period of their interaction (Iven 2009; Stadler 2001, Ch. 6). The principal effect of this influence on Schlick was the assimilation, into his already well-defined philosophical views, of insights stimulated by these conversations. 