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The ISBN of The Locked Room is 91-1-725301-2.
Locked Out - 1915 was released on:
USA: 1 May 1915
The Defenders - 1961 The Locked Room 1-21 was released on:
USA: 10 February 1962
The Munsters - 1964 Love Locked Out 1-24 was released on:
USA: 4 March 1965
Flagged for Removal - 2009 Locked Out 1-5 was released on:
USA: 6 July 2009