This is the 3-Book Paperback Collection Set by C.S. Lewis - Out of the Silent Planet, Perelandra & That Hideous Strength book set, includes:

Out of the Silent Planet
ISBN: 9780743234900

Perelandra
ISBN: 9780743234917

That Hideous Strength: A Modern Fairy-Tale for Grown-Ups
ISBN: 9780743234924

Excerpts:
Chapter I

The last drops of the thundershower had hardly ceased falling when the Pedestrian stuffed his map into his pocket, settled his pack more comfortably on his tired shoulders, and stepped out from the shelter of a large chestnut-tree into the middle of the road. A violent yellow sunset was pouring through a rift in the clouds to westward, but straight ahead over the hills the sky was the colour of dark slate. Every tree and blade of grass was dripping, and the road shone like a river. The Pedestrian wasted no time on the landscape but set out at once with the determined stride of a good walker who has lately realised that he will have to walk farther than he intended. That, indeed, was his situation. If he had chosen to look back, which he did not, he could have seen the spire of Much Nadderby, and, seeing it, might have uttered a malediction on the inhospitable little hotel which, though obviously empty, had refused him a bed. The place had changed hands since he last went for a walking-tour in these parts. The kindly old landlord on whom he had reckoned had been replaced by someone whom the barmaid referred to as "the lady, " and the lady was apparently a British innkeeper of that orthodox school who regard guests as a nuisance. His only chance now was Sterk, on the far side of the hills, and a good six miles away. The map marked an inn at Sterk. The Pedestrian was too experienced to build any very sanguine hopes on this, but there seemed nothing else within range.

He walked fairly fast, and doggedly, without…