On sale date as given in the copyright application as listed in the Catalog of Copyright Entries, Periodicals, January-June 1955, page 40, registration number B540339.
Some information on this issue from Tom Lammers and Ger Apeldoorn via the Atlas-Timely discussion group.
Joe Maneely pencils & inks unsigned (foreground figure shooting from train)
Colors: Goldberg credited by himself.
Text story with illustration.
Andru/Esposito credit per Nick Caputo, November 2012.