Abel Paz (1921–2009) was a Spanish anarchist and historian who fought in the Spanish Civil War. He is considered one of the noted Spanish anarchist historians, writing multiple volumes on anarchist history, including a biography of Buenaventura Durruti, an influential anarchist during the war. He kept the anarchist tradition throughout his life, including a decade in Francoist Spain's jails and multiple decades in exile in France.

José Buenaventura Durruti Dumange was a Spanish insurrectionary, anarcho-syndicalist militant involved with the CNT and the FAI in the periods before and during the Spanish Civil War of 1936–1939. Durruti played an influential role during the Spanish Revolution of 1936 and is remembered as a hero in and by the anarchist movement.