Filtering by: Contributor Datelle, Henry R. Remove constraint Contributor: Datelle, Henry R. Contributor Glazer, David L. Remove constraint Contributor: Glazer, David L. 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 Glazer, David L. Remove constraint Subject: Glazer, David L. Year 1980 Remove constraint Year: 1980