Another 1953 offering:
"They Crawl By Night", written by Daniel Keyes, with art by Basil Wolverton.
From JOURNEY INTO UNKNOWN WORLDS 15, Feb 1953 (click image to view story).
Great art and colors, combined with a story by the guy who would later write the
Hugo- and Nebula-winning
Flowers For Algernon.
Here's a black-and-white version of the same 5-page story:
http://therainer.blogspot.com/2011/04/they-crawl-by-night-by-basil-wolverton.html