What author is well known for writing speculative fiction and featured cover art by her brother on one of her books?
The Goblin Mirror The Goblin Mirror is a 1992 fantasy novel by science fiction and fantasy author C. J. Cherryh. It was first published in a hardcover edition by Ballantine Books under its Del Rey Books imprint, and featured cover art by Cherryh's brother, David A. Cherry.
Leo and Diane Dillon Leo Dillon (March 2, 1933 – May 26, 2012) and Diane Dillon ("née" Sorber; born March 13, 1933) were American illustrators of children's books and adult paperback book and magazine covers. One obituary of Leo called the work of the husband-and-wife team "a seamless amalgam of both their hands". In more than 50 years they created more than 100 speculative fiction book and magazine covers together as well as much interior artwork. Essentially all of their work in that field was joint.