Twelve dimension-shattering tales of time travel, featuring John Varley, Ursula K. LeGuin, Joe Haldeman, Avram Davidson, Damon Knight, Nancy Kress, R.A. Lafferty, Jack McDevitt, Bridget McKenna, Richard McKenna, Charles Sheffield, and James Tiptree, Jr. These stories take readers from everyday reality into the infinite vistas of time and space--as far as the man can reach.