An interesting story on the Soviet era record industry, bootlegging, and medical X-Ray plates. I had never heard of this before and found it to be a cool bit of oddball history. Here is the link.
http://gizmodo.com/the-bizarre-history-of-x-ray-records-and-early-music-pi-1621176133
http://gizmodo.com/the-bizarre-history-of-x-ray-records-and-early-music-pi-1621176133