What has the author S W Johnson written?

Please provide more information about the author you are referring to. There are many authors with the initials "S.W. Johnson."

To help me find the correct author, could you provide:

* Full name: Is it S.W. Johnson or something else?

* Genre: What kind of books does this author write? (fiction, non-fiction, poetry, etc.)

* Any specific titles: Do you know the name of any books this author has written?

Once I have more information, I can help you find out what the author has written.