“[He] devoted almost all of his 35-year career to his unusual combination of art-making and teaching, and to the group, which exhibited as Tim Rollins + K.O.S.” (It stands for Kids of Survival.) “In a classroom with a barely functioning sink and broken windows boarded up with plywood, Mr. Rollins and his most interested students had begun to function as a workshop when they hit on the idea of using books for both inspiration and material.”