And here's what led me to DeviantArt in the first place, the cover artwork for the lost Hartnell script of 'Farewell Great Macedon', by Jason Fletcher. See his gallery here.
The scripbook was published in August 2009 by 'Nothing at the End of the Lane', see their website here.
The story is due for release as a Big Finish audio drama in The First Doctor Boxset, with another story, The Fragile Yellow Arc of Fragrance. Due November 2010.
Read more about it on the who wiki.