Emeritus Professor David Harold Blackwell passed away peacefully in Berkeley July 8, 2010. Professor Blackwell was born in Centralia, Illinois on April 24, 1919. Throughout his academic career he was a most distinguished teacher and researcher. He taught at Howard University for ten years before coming to Berkeley in 1955. At Berkeley he had appointments in both the Mathematics and Statistics departments. He became Emeritus Professor in 1989. Professor Blackwell will be missed by many communities.