Paul Kurtz. Introduction. American philosophy in the twentieth century. A sourcebook. Edited by Paul Kurtz, The Macmillan Company, New York, and Collier-Macmillan Ltd., London, 1966, pp. 17–42. - Paul Kurtz. Charles S. Peirce. American philosophy in the twentieth century. A sourcebook. Edited by Paul Kurtz, The Macmillan Company, New York, and Collier-Macmillan Ltd., London, 1966, pp. 45–47. - Paul Kurtz. Alfred North Whitehead. American philosophy in the twentieth century. A sourcebook. Edited by Paul Kurtz, The Macmillan Company, New York, and Collier-Macmillan Ltd., London, 1966, pp. 263–264. - Paul Kurtz. Morris R. Cohen. American philosophy in the twentieth century. A sourcebook. Edited by Paul Kurtz, The Macmillan Company, New York, and Collier-Macmillan Ltd., London, 1966, pp. 372–373. - Paul Kurtz. Clarence Irving Lewis. American philosophy in the twentieth century. A sourcebook. Edited by Paul Kurtz, The Macmillan Company, New York, and Collier-Macmillan Ltd., London, 1966, pp. 387–388. - Clarence Irving Lewis. An analysis of knowledge and valuation. Excerpts from XIII 40. American philosophy in the twentieth century. A sourcebook. Edited by Paul Kurtz, The Macmillan Company, New York, and Collier-Macmillan Ltd., London, 1966, pp. 397–414. - Paul Kurtz. Rudolf Carnap. American philosophy in the twentieth century. A sourcebook. Edited by Paul Kurtz, The Macmillan Company, New York, and Collier-Macmillan Ltd., London, 1966, pp. 415–416. - Rudolf Carnap. Empiricism, semantics, and ontology. A reprint of XVI 292. American philosophy in the twentieth century. A sourcebook. Edited by Paul Kurtz, The Macmillan Company, New York, and Collier-Macmillan Ltd., London, 1966, pp. 416–432. - Paul Kurtz. Willard Van Orman Quine. American philosophy in the twentieth century. A sourcebook. Edited by Paul Kurtz, The Macmillan Company, New York, and Collier-Macmillan Ltd., London, 1966, pp. 443–444. - Willard Van Orman Quine. Speaking of objects. A reprint of XXIV 268. American philosophy in the twentieth century. A sourcebook. Edited by Paul Kurtz, The Macmillan Company, New York, and Collier-Macmillan Ltd., London, 1966, pp. 444–460. - Paul Kurtz. Max Black. American philosophy in the twentieth century. A sourcebook. Edited by Paul Kurtz, The Macmillan Company, New York, and Collier-Macmillan Ltd., London, 1966, p. 462. - Max Black. Language and reality. American philosophy in the twentieth century. A sourcebook. Edited by Paul Kurtz, The Macmillan Company, New York, and Collier-Macmillan Ltd., London, 1966, pp. 462–474. (Reprinted from Proceedings and addresses of the American Philosophical Association, vol. 32 (1959), pp. 5–17. Also reprinted in Models and metaphors, Studies in language and philosophy, Cornell University Press, Ithaca, New York, 1962, pp. 1–16.) - Brand Blanshard. Reason and analysis. American philosophy in the twentieth century. A sourcebook. Edited by Paul Kurtz, The Macmillan Company, New York, and Collier-Macmillan Ltd., London, 1966, pp. 477–498. (Excerpt from Chapter X of the author's Reason and analysis, Open Court Publishing Company, LaSalle, Illinois, 1962, 505 pp.) - Paul Kurtz. Ernest Nagel. American philosophy in the twentieth century. A sourcebook. Edited by Paul Kurtz, The Macmillan Company, New York, and Collier-Macmillan Ltd., London, 1966, p. 543.