List of Ace SF double titles

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Ace Books published 221 science fiction Ace doubles between 1952 and 1973 in tête-bêche format, and a further 40 between 1974 and 1978 in a more traditional format in which the two books are both the same way up.

Genres and collectability[edit]

Ace published science fiction, mysteries, and westerns, as well as books not in any of these genres. Collectors of these genres have found the Ace doubles an attractive set of books to collect, because of the unusual appearance of the tête-bêche format. This is particularly true for the science fiction books, for which several bibliographic references have been written (see the References section). The format inspired a further series of sf doubles published by Tor Books between 1988 and 1991, the Tor Double Novels.

Because the tête-bêche format is part of the attraction for collectors, some do not regard as true Ace Doubles those books published between 1974 and 1978, which contain two works by one or two authors bound traditionally rather than back-to-back and upside-down (tête-bêche format). All volumes containing two SF works, in the entire 1952 to 1978 series, are listed below, with the late change in format noted.

Each listing gives a publication date; in all cases, that is year of publication by Ace, with the given catalog number, not earliest publication date of the contents. The list is complete for books containing two science fiction titles. Number D-13 in the official series, listed in Miscellaneous Ace Doubles, contains one novel, Cry Plague! by Theodore S. Drachman, which can be regarded as science fiction. Therefore some science fiction collectors treat D-13 the first science fiction Ace Double, although the novel on the other side of the book is a mystery, The Judas Goat by Leslie Edgley.

For more information about the history of these titles, see Ace Books, which includes a discussion of the serial numbering conventions used and an explanation of the letter-code system.

D Series[edit]

F Series[edit]

M Series[edit]

G Series[edit]

H Series[edit]

Numbered Series[edit]

Serial number 48245, above, was the last Ace Double published in the tête-bêche format. The remainder of the books listed in this section contain two novels, but are published in the traditional way with a single cover and the text the same way up throughout the book. Another Ace SF double(G-723-Andre Norton-Star Hunter/Voodoo Planet) was published in 1968 as a traditional reprint in the second G series (begun in 1964). G-723 was the only traditionally printed SF double included in that series and thus does not fit under any of the categories listed here.

The remaining novels do not have complete date information, so they are sorted in numerical order of the serial number. Note that the following are also not in tête-bêche format.


  • Ace Image Library. Contains images of most covers for the doubles in all genres, as well as many of the single titles.
  • Bookscans. Contains numerous images of the Ace covers.
  • Corrick, James A. Double Your Pleasure: The Ace SF Double, Gryphon Books, 1989. ISBN 0-936071-13-3. A historical article, followed by a checklist of the SF Doubles, giving prior publication history for the contents of each one.
  • Thiessen, J. Grant Science Fiction Collector #1, Pandora's Books, 1976. Includes Ace Double checklist.
  • Thiessen, J. Grant Science Fiction Collector #2, Pandora's Books, date unknown. Includes errata for checklist in #1.
  • Tuck, Donald H. The Encyclopedia of Science Fiction and Fantasy: Volume 3, Advent: Publishers, Inc., 1982. ISBN 0-911682-26-0. Lists all ACE sf titles, single and double, published through 1968.

The following references have not been seen but cover the Ace Doubles:

  • Jaffery, Sheldon Double Trouble: A Bibliographic Chronicle of Ace Mystery Doubles, Starmont Popular Culture Series no. 11, Borgo Press, 1987. ISBN 1-55742-118-8.
  • Jaffery, Sheldon Double Futures: An Annotated Bibliography of the Ace Science Fiction Doubles, Borgo Press, 1999. ISBN 1-55742-139-0.
  • Peters, Harold R. Science Fiction, Fantasy & Horror in the Ace Letter-Series Editions: A Collector's Notebook, Silver Sun Press, 1996.