“In general, the all-male group shared a longing for that half-imaginary time before man’s alienation from God, nature and self, the time before the chaos and materialism of the post-industrial era had displaced the elegantly organized cosmos of the Middle Ages. In their various ways, each hoped to spearhead a rehabilitation, a re-enchantment of our fallen world.” Michael Dirda reflects on The Fellowship: The Literary Lives of the Inklings: J.R.R. Tolkien, C. S. Lewis, Owen Barfield, Charles Williams by Philip Zaleski and Carol Zaleski. He says the book focuses largely on the men’s religious lives and thoughts.
The Fellowship looks to be a great, detailed introduction to Barfield and Williams, two men close to Lewis and Tolkien but unfamiliar to most of their fans.
I’ve read it, and found it treads a lot of familiar ground.