The Enchanted World Series of books was published in the 1980s. Each book focused on different aspects of mythology or folklore, and all were released by Time Life Books.
Legends of Valor Dwarfs Giants and Ogres Seekers and Saviours Fabled Lands Book of Christmas Fall of Camelot Magical Justice Lore of Love Book of Beginnings The Secret Arts
$20 per book or take all of them for $95
I can meet you in London the next time I'm there