The James Lind Library http://www.jameslindlibrary.org/
Documents the evolution of fair tests of medical treatments, with examples from various books and journal articles. Also biographical material, portraits, translations, and commentaries.
UHR Books http://www.abebooks.com/home/UHRBOOKS/
Antiquarian booksellers specializing in the history of medicine, surgery, nursing, public health, epidemiology, sanitation, infectious diseases, microbiology, parasitology and virology.