^No offense to anyone, just how I feel.
Anyway, since this is the Magician's Nephew speculation thread, here's the entry for The Magician's Nephew from The C.S. Lewis Encyclopedia, one of my favorite Lewis reference books:
(1955) This tale tells of the creation of Narnia by Aslan. It also tells us about the Edwardian childhood of Professor Digory Kirke, who owned the big country house with the wardrobe in The Lion, the Witch and the Wardrobe, and how the London gas lamppost came to be in Narnia at all. Also, it speaks of the origin of the White Witch and explains the arrival of evil in Narnia-showing the evil as older than that world.
Digory and his dying mother were staying with his Uncle Anderw and Aunt Letty in London, his father being in India. The boy made friends with Polly Plummer, his neighbor, and the two were tricked into an experiment with magic rings by the uncle, a mad scientist.
At first they found themselves in the dying world of Charn, blighted by Jadis, the White Witch, whom Digory awakes from a spell, despite warnings from Polly. They are unable to leave her behind as they return to London with the aid of the rings. There Jadis wreaks havoc, until the children are able to whisk her back to The Wood Between the Worlds, but not before she had wrenched off a handle from a lamppost, intending to use it to punish those who opposed her. The trio, along with Frank, a London cabby, and his horse, and Uncle Andrew, end up in an empty world of Nothing in time to hear Aslan's creation song. At the words and music of the lion's song, mountains, trees, animals, and other creatures come into being to make Narnia and the world of which it is part. The sequence is reminiscent of passages from J.R.R. Tolkien's The Silmarillion, parts of which Lewis was familiar with in unfinished form.
Aslan gives Digory the opportunity of undoing the evil he had brought into Narnia. His task is to find a magic apple, the seed of which would produce a tree to protect the young world from Jadis for many a year. Polly joins him on the adventure, which requires journeying into the mountains of the Western Wild to find a delightful valley. In a garden there on a hilltop grew an apple tree with the magic apples. To help them, the Cabby's horse, Strawberry, renamed Fledge by Aslan, is transformed into a flying and talking horse to carry them.
Upon the children's return, Aslan allows Digory to bring back an apple from the tree that immediately sprang up from the seed. This apple restored his dying mother. C.S. Lewis's own mother, Flora Hamilton Lewis, died when he was a boy in Edwardian Belfast.
In the fecundity of new growth associated with Narnia's creation, the metal pole brought by the Witch grows into a lamppost in Lantern Waste, and a great apple tree grows from the core of the magic apple eaten by Mrs. Kirke. Later, after the great tree fell, Digory had it made into a large wardrobe, the very same wardrobe that features in The Lion, the Witch and the Wardrobe.