Dwight V. Swain

grav n. 1	1958 D. V. Swain Stay Out of Space! in Imaginative Tales 19/2 He climbed in and depressed the lift-pedal. The gravs took hold.
micro book n.	1953 D. V. Swain Transposed Man in Thrilling Wonder Stories Nov. 25/1 The general lumbered over to a built-in microbook case, ran a blunt thumb across the backs of the reel-cartons on the top shelf, finally pulled one out.
visiscreen n.	1951 D. V. Swain Cry Chaos! in Imagination Sept. 60/1 The exploding flame of pronic [sic; in 1953 ed. ‘protonic’] blasts erupted across the short-range visiscreen’s whole viewer.