From 1951 until 1974, Holmesburg Prison in Philadelphia was the site of thousands of experiments on prisoners conducted by researchers under the direction of University of Pennsylvania dermatologist Albert M. Kligman. While most of the experiments were testing cosmetics, detergents, and deodorants, the trials also included scores of Phase I drug trials, inoculations of radioactive isotopes, and applications of dioxin, in addition to mind-control experiments for the Army and CIA. These experiments often left the subject-prisoners, mostly African Americans, in excruciating pain and had long-term debilitating effects on their health. This is one among many episodes of the sordid history of medical experimentation on the black population of the United States. The story of the Holmesburg trials was documented by Allen Hornblum in his 1998 book "Acres of Skin". The more general history of African Americans as human guinea pigs has most recently been told by Harriet Washington in her...