Who is this person?

[RJNorton]

I can see that my clues are not working. The answer is James Redpath who probably (but not for certain) was the ghostwriter for Elizabeth Keckly's book. My clue of Casper was admittedly a stretch. I was hoping folks would think of "ghost" and then "connect" that somehow with the lengthy discussion we've been having on Keckly's ghostwritten book. Most sources I've seen identify Redpath as the likely ghostwriter. Steve got the answer right in an email to me, but he's having problems with his computer and could not post it.