1. An Account of the Foxglove and Some of Its Medicinal Uses;Withering;With Practical Remarks on Dropsy and Other Diseases,1785
2. The Pharmacological Assay of the Heart Tonics;Houghton;J.A.M.A,1898
3. The Biological Standardization of Drugs;Hatcher;Am. J. Pharm,1910
4. The Relative Activity of Digitalis Preparations in the Frog, the Cat and Man, and Its Bearing on the Problem of Bio-assay and So-called Deterioration;Gold;J. Pharm. & Exper. Therap,1941
5. The Quantitative Effect of Fifteen Chemically Related Glycosides and Genins on the Embryonic Chick Heart;DeGraff;J. Pharm. & Exper. Therap,1941