If, like me, you remember being told about Leif Eriksson at primary school but have since forgotten the story, then this book will help get you back on track. It escapes me now why it happened, but it was the end of what seemed like a marathon Latin lesson where our teacher had been trying to explain the subjunctive to us 9-year-olds - it was when he mumbled something about the Greek aorist that we were really lost. Anyway, he decided to tell us a story. And so weird Scandinavians entered my world-view.
Dr Davis' book puts forward a coherent argument for the Viking exploration of North America - but this is not what is new and interesting. Rather, what is interesting is that he shows that far from being medieval tourists on booze-cruises out for a bit of rape and pillage across the ocean, they were indeed settlers. Villages were established along the eastern seaboard and up into the High Arctic.
The book discusses the evidence from archaeology, literature, and linguistics to show the durability of the Viking, and hence European, presence in the Americas many hundreds of years prior to Columbus. In a balanced approach, Dr Davis discusses the merits of the Vinland Map, Kensington Runestone, and the Newport Tower and other Vikings finds.
This book is well worth reading if you are looking for an accessible introduction to the topic. You definitely do not need to be a specialist.