Publisher:GuildAmerica Books / SFBC

GuildAmerica Books was an imprint created by the Doubleday book clubs to publish their original editions when they were purchased by Bertelsmann in 1987. Previously, they had used the Nelson Doubleday imprint. For the first few years, they continued the Doubleday policy of not using ISBNs, even though these were in essence first editions. Beginning around 1993, GuildAmerica began using the ISBN range 1-56865-xx-x which continued at least into 1999.

For the purpose of this database the SFBC appendage is added to indicate the edition's publication for the Science Fiction Book Club. In all verified cases, this is not indicated in the book itself. Research shows that some of these publications were offered to other Doubleday book clubs as well. And there are many non-speculative-fiction GuildAmerica titles that were never offered to SFBC members.