Photo of Alan Dershowitz in 2009.  Taken by Sage Ross, from larger photo, available at Flickr.  Photo has been cropped, retouched to remove excessive shadowing, coloring and lighting corrected, digital noise removal, removal of some background for purposes of use as a Wikipedia infobox image.
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/ragesoss/">Sage Ross</a>
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/ragesoss/3991427727/in/photolist-aD7iCo-75H7pr-nazSQM-6rm5yX-7vZtXZ">Flickr page of Sage Ross</a>