Grand Rapids: Eerdmans, 1967. First Edition. Hardcover. Precedes the U.K. edition by two years. Between 1950 and his death C.S. Lewis wrote more than 100 letters to this American lady. Her name, not divulged in the book, was Mary Willis Washburne. She donated the letters to Wheaton College. They are.....

New York: Avon, 1960. Softcover. Small 8vo., 159 pp. Avon T-410. Third known Avon printing. No printing or publication date stated. OCLC has no record for this edition.

New York: Macmillan, 1977. Softcover. Small 8vo., 382 pp. Macmillan 08692. First Macmillan Paperbacks Edition 1965. Eighteenth Printing 1977 stated on the copyright page. Cover art by Bernard Symancyk.