Filtering by: Contributor Ballenger, Martha Remove constraint Contributor: Ballenger, Martha Contributor Leone, Lucile P. Remove constraint Contributor: Leone, Lucile P. Location Duke Medical Center Archives Remove constraint Location: Duke Medical Center Archives Collection PA Implementation Era (1966-1972) Remove constraint Collection: PA Implementation Era (1966-1972) Subject Ballenger, Martha D. Remove constraint Subject: Ballenger, Martha D. Subject Stead, Eugene A. Remove constraint Subject: Stead, Eugene A.