1. Published by Julius Springer, Vienna. [The first six volumes in this series (called Schriften zur wissenschaftlichen Weltauffassung) are listed below, with English translations where available. - Eds.]
2. Vol. 1. Friedrich Waismann: Logik, Sprache, Philosophic. [Announced but not published. A very different version was published in 1965 as The Principles of Linguistic Philosophy, edited by R. Harre (London: Macmillan), a translation of the German text, which appeared later (Stuttgart, 1976) under the title, Logik, Sprache, Philosophic, edited by G. P. Baker and B. McGuinness. - Eds.]
3. Vol. 2. Rudolf Carnap: Abriss der Logistik. 1929. [Revised and translated as Introduction to Symbolic Logic. Trans. W. H. Myer and J. Wilkinson. New York: Dover, 1958.] Vol. 3. Richard von Mises: Wahrscheinlichkeit, Statistik und Wahrheit. 1928. [Probability, Statistics and Truth. Trans. J. Neyman, D. Sholl, and E. Rabinowitsch. London: W. Hodge; New York: Macmillan, 1939.]
4. Vol. 4. Moritz Schlick: Fragen der Ethik. 1930. [Problems of Ethics. Trans. D. Rynin. New York: Prentice-Hall, 1939.]
5. Vol. 5. Otto Neurath: Empirische Soziologie. 1931. [‘Empirical Sociology’ in Empiricism and Sociology. Ed. M. Neurath and R. S. Cohen, with translations by P. Foulkes and M. Neurath. Vienna Circle Collection, Vol. 1. Dordrecht, Boston: Reidel, 1973. pp. 319–421.