The Parables of Peanuts, by Robert L. Short (PB, 1968, $1)
Back when I was a teenage, Robert Short came to talk at my dad's church. I remember him as being both funny and profound.
I had never thought of Charles Schulz as being a Christian writer, but he sure thought he was. He wrote, "I preach in these cartoons, and I reserve the same rights to say what I want to say as the minister in the pulpit."
The author of Peanuts wrote of this book, "The Parables of Peanuts is filled with wonderful quotes and is a real delight to read from beginning to end. I could not possibly be more pleased." (I guess he liked it.)
Look for it in the religion blog section.