| 233 | Superman (1st Series) | 1st appearance of the Sand Superman from Quarrm; All Kryptonite on Earth destroyed; Julius Schwartz begins as editor; Main story reprinted in Action Comics #485; World of Krypton back-up |
| 233/A | Superman (1st Series) | 1st appearance of the Sand Superman from Quarrm; All Kryptonite on Earth destroyed; Julius Schwartz begins as editor; Main story reprinted in Action Comics #485; World of Krypton back-up |
| 233/B | Superman (1st Series) | 1st appearance of the Sand Superman from Quarrm; All Kryptonite on Earth destroyed; Julius Schwartz begins as editor; Main story reprinted in Action Comics #485; World of Krypton back-up |
| 233/C | Superman (1st Series) | 1st appearance of the Sand Superman from Quarrm; All Kryptonite on Earth destroyed; Julius Schwartz begins as editor; Main story reprinted in Action Comics #485; World of Krypton back-up |
| 233/D | Superman (1st Series) | 1st appearance of the Sand Superman from Quarrm; All Kryptonite on Earth destroyed; Julius Schwartz begins as editor; Main story reprinted in Action Comics #485; World of Krypton back-up |