Its probably out of print now. But my favourite book as a kid was simply titled "Textbook of Forensic Medicine."
It was a medical textbook (im not sure when it was published) but I spent hours poring over the black and white photographs of corpses of all kinds showing details of exactly what people look like when they die in a range of ways.
Yeah my mum gave it to me.
Favourite images from that included a picture of a baby from India that had it's skull chewed by rats while it slept in it's cradle. Imagine that mother coming in after that nap time... rats in the crib, blood everywhere and those dripping yellow teeth....
Other fascinating ones were details on forensic evidence of strangulation after a body had been burned to hide the cause of death.... what a body looks like after sealice have eaten it down to the bone (they only attacked the exposed parts of the flesh, the clothes protected the rest.
It was a very cool book. I think the best thing about it was that it was so dry and non-sensational because it was a textbook dealing with real people and forensic science of the 1960's.
It totally immunised me against being afraid of anything after that.