Les Edwards has prints (and two originals) of his artwork from The Night Boat available.
RobertMcCammon.com: Prints for Les Edwards's paintings available
Les also did the artwork for They Thirst, which will be published in a signed limited edition next year. The ebook, with his cover art, is available now.
http://www.robertmccammon.com/images/tt_46_hc_lim.jpg
Hunter