Biographical sketch with links of the co-founder of the POUM (Marxist Party of Unification) and leader in the Spanish Civil War.

Background on the party founded by Andres Nin and Joaquin Maurin in 1935

Article from Revolutionary History.

Critical contemporary article by Albert Weisbord.

Article from Revolutionary History on the political relationship and conflict between Trotsky and the POUM led by Andres Nin.