John Snow was much better known in his own era as an anesthesiologist than as an epidemiologist. In fact, he was such a famous anesthesiologist and anesthetist that he was accorded the honor of administering chloroform to Queen Victoria to ease delivery of her last two children. With its multidisciplinary authorship this book, published in 2003, does an excellent job in presenting Snow as a whole person scientifically - one whose research interests in anesthesia and epidemiology are intertwined, rather than distinct, as under the more common characterizations of his contributions.