Ace Double F-173 (1962) paperback; 40 cent cover price. Condition is VG to VG+: tight and square, age tanning is mild to moderate and uniform; light overall wear - a couple of 1" finger-creases on Delany side, and several faint short creases at lower right corner of White side (see scan.) Stamp on first page & page 85 - from the reserves of a defunct SF library (same source as the If magazines I sold in years past.)

Ace Double F-173 (1962): containing The Jewels of Aptor by Samuel R. Delany (his first novel), bound with Second Ending by James White.

The Jewels of Aptor by Samuel R. Delany (156 pages; cover by Jack Gaughan.) Delany's first novel. A thousand years after the Great Fire, three Heroes must recapture the third jewel of Argo from the forehead of the statue of the Dark God Hama, in the land of Aptor. They are Geo, the earth-bound poet; Urson, a bear-man strongman; and Snake, a four-armed thief. Snake is a Strange one- marked by more than his four arms, he is a telepath. In later editions it is revealed that this is an abridged version - but if you want the first book appearance by a major SF author - this is it.

(Bound with) Second Ending by James White (cover by ???, 100 pages.) Serialized in Fantastic June, July 1961.
5 miles beneath the surface, Ross was awakened from the deep sleep of suspended animation to find himself in an empty world. There was no noise, no people, and no motion except for the steady activity of the hospital robots. What had happened to life? Was Ross the last human being in existence? Could he find another? He didn't know the answers but he did know that soon he had to find some other living creatures. Even if he had to create them synthetically, assisted by the robots who would obey his every desire. With the deep sleep at his command, he could experiment with life itself as no other scientist had ever done - and he had all eternity to do it in!