For the first couple of years the magazine was actually titled Secret Agent “X” but in November 1935 it settled down to Secret Agent X by which title it is generally known. |
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Details supplied by Al Tonik. |
Details supplied by Al Tonik. |
Details supplied by Al Tonik. |
Details taken from Table of Contents. |
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Details taken from Table of Contents. |
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Details supplied by Al Tonik. |
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Details supplied by Al Tonik. |
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Details supplied by Tom Johnson. |
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Details taken from Table of Contents. |
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