Santa Barbara: Capra Press, 1979. Octavo, pictorial wrappers. First edition. Collects "Crater 17, Near Tycho," "Starship Invincible" and "The Radium World, all first published in ASTOUNDING." Kelly "was a noted writer in the SF field in the early 1930's, when he wrote some 10 stories while in his late teens." - Tuck (1974), p. 252. Trade paperback format.