1. The extent of voluntary health insurance in the United States,1957
2. Nature of hospital costs;Brown;Hospitals,1956
3. Recommendations for experimental prepayment dental plan;Council on Dental Health, American Dental Association;J.A.D.A.,1945
4. Family medical costs and voluntary health insurance: a nationwide survey;Anderson,1956
5. Dental survey of an urban, employed group;Palmer;J.A.D.A.,1957