from Strange Worlds (Avon, 1950 series) #6 (February 1952)Inside front cover. Lettering is credited by illegible in the copy the index was created from.
from Amazing Adventures (Ziff-Davis, 1950 series) #1 (1950)Unable to determine which story is being reprinted. The issue just states it is from Military Comics.
from Captain Science (Youthful, 1950 series) #5 (August 1951)