October 1, 2011 by The Belated Nerd
Ace Books published more than 200 Science Fiction Ace Doubles between 1952 and 1973 in tête-bêche format (a book with two front covers rotated 180° relative to the other – the ends of each novel meeting in the middle of the book).
Here is a cover gallery of Ace SF Doubles published in 1961:
Category Books, Science Fiction | Tags: 1961,A. Bertram Chandler,ACE,Andre Norton,Clifford Simak,Damon Knight,Fritz Leiber,Gordon R. Dickson,John Brunner,Keith Woodcott,Kenneth Bulmer,Leigh Brackett,Lloyd Biggle,Poul Anderson,Ray Cummings,Robert Lowndes,Robert Silverberg,science fiction | No Comments