Fire In The Heavens by George O Smith & Masters Of Evolution by Damon Knight

ACE DOUBLE D-375
MASTERS OF EVOLUTION
by
DAMON KNIGHT
and
FIRE IN THE HEAVENS
by
GEORGE O SMITH

PUBLISHED
by
ACE BOOKS
1959

Part of the long-running "Ace Double" series of science fiction paperbacks, this volume consists of the stories named above, printed back to back and upside down in relation to each other, with two front covers.  So you finish one story and flip the book over to read the other one - what's known as tete-beche format.  Like a lot of SF fans, I collect these, but I happened to have an extra copy of this one.

The book is in fair to good vintage condition, with visible wear to the covers and spine, especially some visible scuffing to the cover of "Fire in the Heavens".  The cover is starting to become detached from the pages, but the book is otherwise intact, with the pages themselves being yellowed but undamaged.  Please judge from the pictures..

I'm always careful with my packaging and will make sure the book is well-protected against both water damage and any careless handling it might receive in transit.  Read my feedback and buy in confidence.