1. Bentonite: Its properties, mining preparation, and utilization;Davis,1940
2. Bentonite;Lesser;The Drug and Cosmetic Industry,1941
3. Preparation of a carrier base for medicinal and cosmetic pastes;Brown;Canadian Patent,1924
4. Compound for protecting the hands from the effects of contact with oil, grease and dirty substances;Kellogg;Canadian Patent,1925
5. Composition of matter for use in treatment of diseases of the skin;Haraldson;U. S. Patent 1 Aug. 1,1933