First Published: Leon Trotsky, In Defense of Marxism, New York 1942.
Reprinted: Leon Trotsky, In Defence of Marxism, London 1966.
- A Letter to James P. Cannon (September 12, 1939)
- The USSR in War (September 25, 1939)
- A Letter to Sherman Stanley (October 8, 1939)
- Again and Once More Again on the Nature of the USSR (October 18, 1939)
- The Referendum and Democratic Centralism (October 21, 1939)
- A Letter to Sherman Stanley (October 22, 1939)
- A Letter to James P. Cannon (October 28, 1939)
- A Letter to Max Shachtman (November 6, 1939)
- A Letter to James P. Cannon (December 15, 1939)
- A Petty-Bourgeois Opposition in the Socialist Workers Party (December 15, 1939)
- A Letter to John G. Wright (December 19, 1939)
- A Letter to Max Shachtman (December 20, 1939)
- Four Letters to the National Committee Majority:
- A Letter to Joseph Hansen (January 5, 1940)
- An Open Letter to Comrade Burnham (January 7, 1940)
- A Letter to James P. Cannon (January 9, 1940)
- A Letter to Farrell Dobbs (January 10, 1940)
- A Letter to John G. Wright (January 13, 1940)
- A Letter to James P. Cannon (January 16, 1940)
- A Letter to William F. Warde (January 16, 1940)
- A Letter to Joseph Hansen (January 18, 1940)
- From a Scratch – To the Danger of Gangrene (January 24, 1940)
- A Letter to Martin Abern (January 29, 1940)
- Two Letters to Albert Goldman:
- Back to the Party (February 21, 1940)
- “Science and Style” (February 23, 1940)
- A Letter to James P. Cannon (February 27, 1940)
- A Letter to Joseph Hansen (February 29, 1940)
- Three Letters to Farrell Dobbs:
- Petty-Bourgeois Moralists and the Proletarian Party (April 23, 1940)
- Balance Sheet of the Finnish Events (April 25, 1940)
- A Letter to James P. Cannon (May 28, 1940)
- A Letter to Albert Goldman (June 5, 1940)
- On the “Workers” Party (August 7, 1940)
- A Letter to Albert Goldman (August 9, 1940)
- A Letter to Chris Andrews (August 17, 1940)
Last updated on: 12.4.2007