More like The Jade Demons Quartet

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Tolkien's legendariumUniverse
universe163 books1923
Fantasy, set in secondary world.
“Before the seas were bent and the mountains raised, there was Music — and from that Music came Arda, and in the west of Middle-earth the long defeat and stubborn hope of those who dwell there.”
from the catalogue
Start with The Fellowship of the Ring →
includes The Hobbit, The Lord of the Rings, The Fall of Gondolin, The History of Middle Earth, The History of the Lord of the Rings
RedwallUniverse
universe32 books1986
“Ring the Joseph Bell and lay the long tables, for a tale is starting.”
from the catalogue
Start with Redwall →
includes Redwall, The Tribes of Redwall, Redwall Picturebooks, Redwall Audio Version
SparhawkUniverse
universe6 books1989
Epic fantasy and fantasy, adventurous in tone, about quests, set in secondary world.
“Sir Sparhawk is not a young man, and he has little patience for the pageantry his order pretends to.”
from the catalogue
Start with The Diamond Throne →
includes Elenium, The Tamuli
NarniaUniverse
universe38 books1950
Portal fantasy.
“Once there is a wardrobe at the back of a spare room, and behind the fur coats the wood gives way to snow, and a lamp-post burns alone among the trees.”
from the catalogue
Start with The Lion, the Witch and the Wardrobe →
includes Narnia, Narnia Solo Adventures
The Princess and the GoblinSeries
series2 books1871
completed
About coming of age.
“Strahan had published the story and illustrations as a serial in the monthly magazine Good Words for the Young, beginning November 1870.”
from the catalogue
Start with The Princess and the Goblin →
The Well at the World's EndNovel
William Morrisstandalone novel1896
Epic fantasy and fantasy, adventurous in tone, about quests, set in secondary world.