Vintage science fiction paperback Ace "Double" "Lost In Space & Earth's Last Fortress" c1960 George Smith AE van Vogt

CONDITION: Very good -. Solid spine, not cracked. No loose, torn, or folded pages. No writing. Text is square and tight. Fairly well tanned. Some chipping at the spine edges, both covers have a corner crease. See accompanying images for full condition details. ABOUT: Published circa 1960 by ACE in their popular "doubles" series where they melded to complete novel, each with its own cover art, into one book. This is an early .35 cent issue. Lost in Space kicked off the popular TV series. Will ship promptly, carefully packaged.