Kathryn Lindskoog is a prolific writer, teacher, and literary critic. She is probably best known for her book C. S. Lewis: Mere Christian, an examination of the work of Lewis, who wrote to her, "You know my work better than anyone else I've met: certainly better than I do myself." Among her twenty-one other books are Creative Writing for People Who Can't Not Write and the three-volume Dante's Divine Comedy: Journey to Joy. The mother of two grown children, she lives in California with her husband.

Ranelda Mack Hunsicker, a former elementary and high school teacher, is now a freelance writer of books and articles and a staff writer for Chuck Swindoll's Insight for Living ministry. She has written five books, including In God We Trust: Stories of Faith in American History (with Tim Crater), The Hidden Price of Greatness (with Ray Beeson) and a biography of David Brainerd. She and her husband live in California.