Standard, 1951 Series
 
Cover for Willie the Penguin (Standard, 1951 series) #1
Cover for Willie the Penguin (Standard, 1951 series) #2
Cover for Willie the Penguin (Standard, 1951 series) #3
Issue 3
September 1951
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Cover for Willie the Penguin (Standard, 1951 series) #4
Issue 4
November 1951
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Cover for Willie the Penguin (Standard, 1951 series) #5
Issue 5
January 1952
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Cover for Willie the Penguin (Standard, 1951 series) #6