Born in Boquilla de Conchos, Chihuahua, Mexico, Abelardo “Lalo” Barrientos Delgado (November 27, 1931 – July 23, 2004) was a teacher, social worker, community organizer, and writer. Delgado and his family moved to El Paso, Texas in 1943. He graduated from Bowie High School in 1950, and later moved to Denver, Colorado during the 1960s. Delgado is best known for his social activism and for his writing career. Beginning in the 1960s he wrote many poems, works of fiction, and essays. Delgado remains an important figure in Chicano literature. The Abelardo Delgado Collection dates 1967 – 2010, bulk 1970s. Types of records include publications, correspondence, writings, clippings, photographs, articles, programs, and other printed material. Arranged in two series (Pamphlet files and compiled notebooks and Writings and other materials), these records help document Delgado’s activities and writings from 1967 to the 2000s as well as the Chicano movement of the late 1960s – 1970s.