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.

The Kate Sharpley Library is a library dedicated to anarchist texts and history. Started in 1979 and reorganized in 1991, it currently holds around ten thousand English language volumes, pamphlets and periodicals.