Books can be attributed to "Unknown" when the author or editor (as applicable) is not known and cannot be discovered. If at all possible, list at least one actual author or editor for a book instead of using "Unknown".
Books whose authorship is purposefully withheld should be attributed instead to Anonymous.
I wrote as a twenty year old "Beautiful story of an actress brought to Christ during a Billy Graham crusade in London, England. Encouraged me greatly." Encouraged me to do what or in what way. I'm not sure.
My grandmother moved from Garner, NC to Johnson City, TN in 1981 to be nearer to my mother. I would walk over to her house on weekends and hang out with her. She had many books that were produced by the Billy Graham Evangelistic Association and other books that had their roots in the Southern Baptist cause. This was one of the books that I picked up and read. It is about a British actress who is suicidal (I believe she had dated Bobby Kennedy before Ethel) and went to a Billy Graham Crusade.