New York, Gnome Press, 1949. First edition, first impression. Hardback. A fine copy. First published over three issues of Astounding in 1951 (as Anson MacDonald). Based to some extent on an unpublished John W. Campbell work. A small group of scientists and engineers, using advanced technology, must clandestinely battle and defeat an invading Asian military force that has conquered the United States, all while challenging the traditional science fiction narrative of the time with its unconventional and controversial themes. A lovely copy with only the slightest of edge wear. Cover art by Edd Cartier [10912, Hyraxia Books].