Arthur And The King's Sword

Arthur and the King's Sword by Tony Bradman (Illustrated by Tony Ross)
 
Arthur is only a humble squire, but he dreams of the day he can finally become a knight like his older brother, Kay. When Kay’s sword goes missing, Arthur sets out to find a replacement as quickly as possible. The special sword he discovers tucked away in a stone will do much more than just help his brother—it will change Arthur's life forever!
 
Part of the Greatest Adventures in the World series, this is a perfect introduction to the legend of King Arthur.