17 - The Secret Warning
Major Edition Types
BACK
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| Type | Years | Text | Cover | Spine | Art | Endpaper |
| A | 1938-47 | Original | Brown | Yellow | Laune | Orange Gretta |
| B | 1947-51 | * | ||||
| C | 1952-58 | Tan | ||||
| D | 1959-61 | Brown multi-scene | ||||
| E | 1962-65 | PC | Blue | Leone | ||
| F | 1966-79 | revised | Nappi | White multi-scene | ||
| G | 1979-87 | Cameo | ||||
| H | 1987-Date | Flashlight PC | Blank | |||
| Major Variants
1959 - off-center cut, Brown multi-scene endpapers * - No frontispiece 1947-1961 | ||||||