Published with permission of Brenner Archive, University of Innsbruck. All rights reserved. None of these documents may be published or quoted without permission. Please send requests, e.g. for permission to quote, to Michael.Schorner@uibk.ac.at or sekretariat-brenner-archiv@uibk.ac.at. The documents were digitised in the course of the two research projects The Banishment and Return of the Philosophy of Science as exemplified by the cases of Rudolf Carnap and Wolfgang Stegmüller (FWF Research Grant P18066, 2005-2009) and History and/or Philosophy of Science (FWF Research Grant P21750, 2009-2011).