1. An introduction to the history of dentistry;Weinberger,1948
2. The history and principles of obturator design;Platt;J Speech Disord,1947
3. Prosthesis, then and now;Wilson;Dent Cosmos,1920
4. Developments in the denture field during the past half centure;Sears;J Prosthet Dent,1958
5. Advanced prosthodontic education: projections by the American College of Prosthodontists;Lang;J Prosthet Dent,1973