Credits for pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. [August 2007]
writer credit by Martin O'Hearn, inker credit by Bob Hughes 12/04. Previously credited to Sam Citron. Based on Martin O’Hearns blog:
http://martinohearn.blogspot.com/2012/03/superman-riss-or-citron.html, and comparing this story
to Citron’s known work on Classics Illustrated 10 [HRN 140] and the DC Mr. District Attorney series, this art credit has been changed to Pete Riss.
Various intuders in the Fortress illustrated with details from Action Comics (DC, 1938 series) #241, World's Finest Comics (DC, 1941 series) #100, Superman's Pal, Jimmy Olsen (DC, 1954 series) #97, World's Finest Comics (DC, 1941 series) #164, and Superman's Girl Friend, Lois Lane (DC, 1958 series) #87.
Original inking credit of George Klein changed to match credits from Superman #148. [Mike Nielsen 5/2007]