Author Seaver is nothing if not thorough. She spends more than 400 pages of text and notes in this book examining the provenance and legitimacy of the famous Vinland map published in 1965 by two institutional giants, Yale University and the British Museum. The authenticity of the map, supposedly drawn in 1440 and showing "Vinland," the Norse discoveries in North America, has long been questioned by scholars. Seaver's account and her detective work in identifying the likely forger of the map is likely to be the definitive account.
Actually, although admiring her work, I spent little time on the long tale of how she determined the Vinland map is a modern-day forgery. More interesting to me was her summary of Norse history in North America which she covered in the first 86 pages. This is an abridgement of the longer account she gave in "The Frozen Echo"
The main question she tackles is one of the most intriguing in history: why did the Norse colonies in Greenland disappear after almost 500 years of existence? A worsening climate, Eskimo attacks, and the failure of the Norse to adjust to the environment of the Arctic have all been cited. To the contrary, Seaver believes that the Greenland colonies failed because the isolated residents united with English cod fishermen and moved on to greener -- and more lucrative -- pastures in Newfoundland about 1500. There's little evidence to back up her opinion, although it is well reasoned. If this idea excites you, read "The Frozen Echo" for a more thorough examination.
Seaver combined the skill of an exhaustive, and sometimes exhausting, scholar with that of a literary detective in writing the book. Its worth your attention.
Smallchief