The Time Axis Author:Henry Kuttner Ace Books Paperback No. F-356; published 1965; original copyright 1948. From the back cover: "Called to the end of time by a being the knew only as The Face of Ea, four adventurers from the 20th Century faced a power that not even the super-science of that era could meet -- the nekron, negative matter, negative force, ultimate destruction for ... more »everything it touched. It seemed hopeless to expect them to win this battle for the fate of the Universe -- but between them they had a power they themselves could not suspect."« less