I have this!! It's a little dense as it written in the 60s i think before the wave of popular non-fiction hit, but it's very detailed and informative. It bypasses the simplistic viking platitudes for instance and gives us the facts.Bought this off Amazon:
Looking forward to cracking this open soon
I'm currently reading the Penguin Cossoc version of 'Early Irish Myths and Sagas'. The Icelandic and Northern European sagas are some of my all time favourite pieces of literature. *penguin classic