Adventures of Superman comic books issue 514
Part 4 of the 5-part 'The Fall of Metropolis,' continued from Superman (1987) #91: Nerve gas is released to ensure that all living things remaining in Metropolis won't last long...unless Superman can overcome his deepest fears when he encounters Luthor's third fail-safe. Concluded in Action Comics (1938 DC) #701. Written by Karl Kesel, with art by Peter Krause and Ron McCain. Cover by Barry Kitson and Ray McCarthy. Cover price $1.50.