1. Plaster as an Impression Material;George;Am. J. Dental Science, Third Series,1869
2. Metals Suitable for Dies and Counter-Dies;Austin;Am. Den. Review,1858
3. Plaster Impressions and Other Things;Franklin;Vulcanite,1861
4. Objectives of Impression Taking;White;Dental Cosmos,1894
5. Clinical Course in Dental Prosthesis;Green,1916