Laurence Manning

materialize v.	1935 L. Manning World of the Mist in Wonder Stories Sept. 413/1 Suppose that we were to materialize right in front of a meteor going at half a mile a second—suppose we materialized in the middle of the earth? We'd not live a second!
mech n.	[1933 L. Manning Call of the Mech-Men in Wonder Stories Nov. 380/1 A dozen different Mech-men began thought-talking at once. Some of them were for killing me and organizing an expedition to explore the world and kill all the humans on it, in order to save the machines from cruel slavery…. ‘Machines better and must rule planet…. Humans only protoplasm.’]
space vessel n.	1935 L. Manning World of Mist in Wonder Stories Oct. 617/2 On I walked, but when I turned around to look, I could see the high rim of the ‘ocean’ in the distance and the little dot that was our space-vessel.