Williams, Robert Moore. The Darkness Before Tommorow.
Woodcott, Keith [Brunner, John]. The Ladder in the Sky.
New York: published by Ace Books, Inc. 1962.
Small octavo, pictorial wrappers. Ace double #F-141. First printings and first publications. Light wear to covers, light wear to edges and corners, creasing to corner, moderate to heavy crease to The Ladder in the Sky cover, bowing to book; light wear to spine corners; age tanned end pages; browning to interior covers edges, light age tanned text pages; Good.