Explore fascinating, often chilling "what if" accounts of the world that could have existed–and still might yet . . .Science fiction’s most illustrious and visionary authors hold forth the ultimate alternate history collection. Here you’ll experience mind-bending tales that challenge your views of the past, present, and future, including:• "The Lucky Strike": When The Lucky Strike is chosen over The Enola Gay to drop the first atomic bomb, fate takes an unexpected turn in Kim Stanley Robinson’s gripping tale.• "Bring the Jubilee": Ward Moore’s novella masterpiece offers a rebel victory at Gettysburg which changes the course of the Civil War . . . and all of American history.• "Through Road No Wither": After Hitler’s victory in World War II, two Nazi officers confront their destiny in Greg Bear’s apocalyptic vision of the future.• "All the Myriad Ways": Murder or suicide, Ambrose Harmon’s death leads the police down an infinite number of pathways in Larry Niven’s brilliant and defining tale of alternatives and consequences.• "Mozart in Mirrorshades": Bruce Sterling and Lewis Shiner explore a terrifying era as the future crashes into the past–with disastrous results.. . . as well as works by Poul Anderson • Gregory Benford • Jack L. Chalker • Nicholas A. DiChario • Brad Linaweaver • William Sanders • Susan Shwartz • Allen Steele • and Harry Turtledove himself!The definitive collection: fourteen seminal alternate history tales drawing readers into a universe of dramatic possibility and endless wonder.