Renowned author and researcher Raymond Moody personally recommended "The Mirror and Man" to me. It is a highly original work of scholarly research on the ancient, worldwide mythologies concerning mirrors and their uses in modern day technology. I'm not aware of anyone who has developed far beyond its unparalleled research. Moody only has less than a chapter devoted to this research in "The Last Laugh". There does indeed appear to be a commonality and connection between some of these beliefs. In fact, the latest archeological research shows that the Scythians of Russia actually had a belief system that was centered on mirrors. Every Scythian wore a small magic/mystical mirror on their belt and was buried with it at death. This would suggest yet another connection between ancient pre-Christian death rituals and mirrors, which further shows the relevance of Moody's research. This is an important subject, which appears to have been accidentally lost in humanity's pre-history.