The Ice-Shirt

"The time is the tenth century A.D. The newcomers are a proud and bloody-minded people whose kings once changed themselves into wolves. The Norse have advanced as implacably as a glacier from Iceland to the wastes of Greenland and from there to the place they call Vinland the Good. The natives are a bronze-skinned race who have not yet discovered iron and still see themselves as part of nature"--Publisher description.