Machine at the heart of the story is a past viewer: select any place & time in the past, & you can see the events as they actually happened. Its poor but idealistic inventor joins hands with a resourceful man to first built a name for the duo making very successful & realistic historical movies, then a documentary on WWI & WWII that exposes the real villains - which stirs up hell since many villains have been installed as heroes by their heirs. Things get really hot when the duo expose the source of their information, the machine...
- Henry Kuttner & C L Moore's "Private Eye" (download): Police has such a past viewer; so crime always gets punished. Now, how does a man get away with murder...
- Ben Bova (ed)'s "The Science Fiction Hall of Fame, Volume Two B".
- John W Campbell, Jr (ed)'s "The Astounding Science Fiction Anthology".
Fact sheet.First published: Astounding, May 1947.
Among the stories in Astounding/Analog issues edited John Campbell.