The Workers' Party of Marxist Unification (Partido Obrero de Unificación Marxista, POUM) was a Spanish communist party, independent from Moscow, which, although numerically small, played an important role in the Spanish civil war and revolution of 1936-9. It is often incorrectly described as Trotskyist.
The POUM's seven decades - Wilebaldo Solano
A history of the POUM, written by a longtime member, Wilebaldo Solano.