Hugh Frazier Parker

Callistonian adj.	1943 H. F. Parker Sword of Johnny Damokles in Planet Stories Mar. 24/1 A cloudlet of dust whirled across Spaceport X and rose in the thin Callistonian air to beat against the window…. Jupiter touched the horizon. And far away, Neptune’s pale blue light glowed softly.
Earth-norm n.	1943 H. F. Parker Sword of Johnny Damokles in Planet Stories Mar. 33/1 He led them down a succession of corridors to a room where temperature and gravity stood at Earth-norm.
Neptunian adj.	1943 H. F. Parker Sword of Johnny Damokles in Planet Stories Mar. 27/1 Are there any Neptunian cruisers massing? Have the planetary wars ended?