George A. Reisch is an independent scholar.

1. An introduction to logical empiricism and the Unity of Science Movement in the Cold War; 2. Otto Neurath, Rudolf Carnap, Charles Morris and Philipp Frank: political philosophers of science; 3. Leftist philosophy of science in America and the reception of logical empiricism in New York City; 4. 'Doomed in advance to defeat'? John Dewey on reductionism, values and the International Encyclopedia of Unified Science; 5. Red philosophy of science: Blumberg, Malisoff, Somerville and early philosophy of science; 6. The view from the left: logical empiricism and radical philosophers; 7. The view from the far left: logical empiricism and communist philosophers; 8. Postwar disillusionment, anti-intellectualism, and the values debate; 9. Horace Kallen's attack on the unity of science; 10. Creeping totalitarianism, creeping scholasticism: Neurath, Frank, and the trouble with semantics; 11. Frank's neurathian crusade: science, enlightenment, and values; 12. 'A very fertile field for investigation': anticollectivism and anticommunism in popular and academic culture; 13. Anticommunism investigations, loyalty oaths, and the wrath of Sidney Hook; 14. Competing programs for postwar philosophy of science; 15. Freedom celebrated: the professional decline of Philipp Frank and the Unity of Science Movement; 16. The marginalization of Charles Morris; 17. Values, axioms and the icy slopes of logic; 18. Professionalism, power and what might have been.