The game is from the book "The Best Move" by Hort and Jansa. One of the best chess books ever. It had a very limited printing and had a big problem. The binding was horrible, the pages literally fall out of the book. I saw a perfect copy of the book being offered on ebay for $900. Even some copies of the book bound together with a rubber-band were going for $100. That's what my copy looks like.
As for this position. ..Bxd5 is incorrect.