Filtering by: Contributor Datelle, Henry R. Remove constraint Contributor: Datelle, Henry R. Location PA History Center Remove constraint Location: PA History Center Collection PA Evaluation and Standardization Era (1973-1980) Remove constraint Collection: PA Evaluation and Standardization Era (1973-1980) Subject Awards and Prizes Remove constraint Subject: Awards and Prizes Subject Certification Remove constraint Subject: Certification Subject Datelle, Henry R. Remove constraint Subject: Datelle, Henry R. Subject Professional Role Remove constraint Subject: Professional Role