Filtering by: Creator Sadler, Alfred Mitchell, 1941- Remove constraint Creator: Sadler, Alfred Mitchell, 1941- Creator Proffitt, John R. Remove constraint Creator: Proffitt, John R. Location Duke Medical Center Archives Remove constraint Location: Duke Medical Center Archives Collection PA Evaluation and Standardization Era (1973-1980) Remove constraint Collection: PA Evaluation and Standardization Era (1973-1980)