1. Popper, Karl, and correspondents. 1967. The Karl Popper Collection, Alpen Adria University of Klagenfurt.
2. Box 65: “Conjectures and Refutations, 1962.”
3. Box 312: “J.C.B. Mohr/Paul Siebeck (Hans Georg Siebeck, Georg Siebeck), re The Poverty of Historicism, The Logic of Scientific Discovery, Die beiden Grundprobleme der Erkenntnistheorie, and Conjectures and Refutations.”
4. Entering the Translab
5. Thick Translation