“The Monster Maker” by Ray Bradbury is a science fiction short story, which appeared in the spring 1944 issue of Planet Stories and is therefore eligible for the 1945 Retro Hugos. The story may be found here. This review will also be crossposted to Retro Science Fiction Reviews.
Notable works:
Fahrenheit 451
The Martian Chronicles
Something Wicked This Way Comes
The Illustrated Man