1. American pharmacy's first great transformation: practice, 1852-1902;Higby;J Am Pharm Assoc.,2000
2. The General Report of the Pharmaceutical Survey 1946-49;Elliott,1950
3. Census 1900 through Druggists Circ. 1907; 51 (Jan.):151. Proc Natl Assoc Bds Pharm 1951; 47th Meeting:48. Rorem CR, Fischelis RP. The Costs of Medicines and the Services of Pharmacists in Medical Care. Chicago: University of Chicago; c. 1932:33,183.
4. Proc Natl Assoc Bds Pharm. 1951:57.
5. Ibid.:58 & 75. Beard JG. The assistant pharmacist: a dangerous anomaly. JAm Pharm Assoc. 1926;15:1119-1126.