I have posted scans from the Star Fleet Medical Reference manual before, focusing mainly on Vulcan physiology. Lately, however, I have noticed an expanding interest in the manual around the internet. So here I am, revisiting the reference manual - studying the history of medicine.
Inside, we find that the Medical Advisor for this manual is none other than Leonard McCoy, M.D. That automatically makes this the best book in the entire world. It makes me glad that I found it before my friend did, who was right beside me looking on the same dusty shelf.
At this link are some pages with the history of medicine, not limited to Earth. It is very interesting to see the different planets' timelines - how advanced Vulcan was, for instance, when Earth was still in the middle ages:
http://vibrant-oxymoron.blogspot.com/2011/08/star-fleet-medical-reference-manual.html