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Hornadys book on the demise of the American Bison.
around the turn of the 18th century, were an estimated 30 million in the U.S,80 yrs later there were 12 left,not 12 million, just 12 wild animals....

I Hope you enjoy the read,I did,The Vikings were very interesting people, they had vertually no written history

The Vikings by Robt.Wernick,a long tome at 500 pges,but fantastic,These folks were ruthless nasty people,thank God they are Gone:)
Of interest is thru DNA studys about 80% of them were Danish.