Harriet A. Washington was kind enough to email me a photo of her book jacket, but I can't figure a way to get it over here. In any case, the title is "Deadly Monopolies", and here are quotes from some of the reviews:
Harriet A. Washington has unearthed an enormous amount of shocking information and shaped it into a riveting, carefully documented book.'
—The New York Times
'Medical Apartheid is fascinating and compelling. ...The book’s analysis challenges the reader to question established paradigms in the history of medicine.'
—Marius Turda, Oxford Brookes University, Social History of Medicine
Medical Apartheid: The Dark History of Medical Experimentation on Black Americans
from Colonial Times to the Present
Winner, National Book Critics Circle Award for Nonfiction, PEN/Oakland Award, BCALA Nonfiction Award, Gustavus Meyers Award
Also, she says, "Deadly Monopolies will be published in February 2011, and I posted an essay on HuffPo that dicusses a few of the topics it addresses. I thought you might be interested, so here's the link.