(born 1940): Luján first began doing murals in East L.A. in the early 1970s. In 1973, he joined Frank Romero, Carlos Almaraz, and Robert de la Rocha in founding a local art collective known as "Los Four." Los Four collaborated on numerous murals, and on other public art installations throughout California during the next ten years, having a major influence on defining Chicano art. Luján has exhibited his paintings and sculptures in numerous solo and group shows in the United States and abroad.