#303 - 'When Lightning Strikes... Thunder Kills!'
#304 - 'The Parasite's Prism Of Peril!'
#310 - 'The Man With The Kryptonite Heart'
#316 - 'The "Heart Attack" That Crippled Superman!'
#317 - 'The Killer With The Heart Of Steel!'
#323 - 'The Man With The Self-Destruct Mind!'