hi! direct responses are welcome, but meanwhile... not sure exactly whether you want books about the man, the legends, or the time, but take a spin through these threads - you may find something of interest

• What are considered the most respected historical sources on King Arthur/Arturus?

books of the legend

• Books about King Arthur in Old English?

• Where did we get the King Aurthur lore from? + follow-up thread is thier any 100% legil proof King Arthur existed?

• in 1313 would most people (as in everyone, not just the upper class and/or literate) in England have heard of king Arthur?

• Would English folk stories and legends (Robin hood, King Arthur, etcetera) have been widely known outside the British isles before the British empire?

fictional treatment

• King Arthur, Bernard Cornwell and post-Roman Britain

off-topic, but posts may contain useful source references

• Convince me that Arthur Mac Aedan of Scotland was not the source for the legendary King Arthur

• Is it possible that King Arthur is really just Offa of Mercia?