"The Revealer" Returns: Photo Clue #1

Several years ago, a remarkable painting was discovered.  It was thought to be the only known portrait of one of the most iconic figures in the world of literature.  But some wondered if it was actually a true likeness of the legendary artist.  Now another copy of that image has been discovered, that some believe should quiet age-old controversies surrounding the writer.

This photograph offers a clue as to the subject of this week's edition of The Revealer.  Think you know what it is?  Post your guess in the comments section.  The first person to get it right will have his or her name read out on Thursday's show, in the Revealer segment!