Charles Willard Diffin

earth folk n.	1931 C. W. Diffin Brood of the Dark Moon in Astounding Stories Nov. 260/1 Chet mentally listened and tried to picture what manner of thing this was that held two Earth-folk helpless, that called them ‘creatures of an inferior race’.
impeller n.	1936 C. W. Diffin Blue Magic in Astounding Stories Jan. 97/1 In my little ship the impeller was only a foot across. Yet it brought me here.
portal n.	1934 C. W. Diffin Land of the Lost in Astounding Stories Jan. 137/1 Portrero, still stumbling, still clutching vainly in air, pitched forward into black shadow and vanished in the nothingness of the dark shaft that was a portal to a waiting world.