Lester del Rey

everywhen n.	1942 ‘L. del Rey’ My Name is Legion in Astounding Science Fiction June 72/2 The plenum is—well, the composite whole of all that is and was and will be—it is everything and everywhen, all existing together as a unit, in which time does not move, but simply is, like length or thickness.
mech n.	1938 ‘L. del Rey’ Helen O’Loy in Astounding Science-Fiction Dec. 119/2 We naturally mulled over the future of the mechs. He was sure that the robots would beat men some day.
space crew n.	1939 ‘L. del Rey’ Luck of Ignatz in Astounding Science-Fiction Aug. 15/1 In an emergency, no group of men on Earth can do the work that a space-crew can turn out in a scant half-hour, and these were all seasoned star-jumpers; to them the lack of gravity was a help rather than a hindrance in the swift completion of the work.
starfleet n.	1939 ‘L. del Rey’ Luck of Ignatz in Astounding Science-Fiction (UK ed.) 4/2 The luckiest man in the star fleet, the Master had been head tester for the new rocket models until the O.M. decided he needed a rest and sent him to Venus.
visiphone v.	1940 ‘L. del Rey’ in Astounding Science-Fiction Aug. 24/1 Stewart had visiphoned that he was coming under a temporary truce, so Erin was not surprised.