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$97Ken Dec 29, 1938
$86Ken Feb 23, 1939
$82Ken May 4, 1939
$155Popular Science Jan 1, 1940
$155Popular Science Feb 1, 1941
$155Popular Science Jan 1, 1942
$155Popular Science Mar 1, 1942
$155Popular Science Apr 1, 1942
$155Popular Science May 1, 1942
$155Popular Science Jul 1, 1942
$155Popular Science Nov 1, 1942
$155Popular Science Dec 1, 1942
$141Popular Science Feb 1, 1943
$155Popular Science Sep 1, 1943
$155Popular Science Nov 1, 1943
$155Popular Science Feb 1, 1944
$116Popular Science Dec 1, 1944
$103Scientific American Nov 1, 1929
$83Scientific American Oct 1, 1943
$83Scientific American Nov 1, 1943
$83Scientific American Jan 1, 1949
$83Scientific American Apr 1, 1949
$83Scientific American Oct 1, 1949
$83Scientific American Dec 1, 1949
$65Ladies' Home Journal Jun 1, 1961
$65Ladies' Home Journal Jul 1, 1961
$65Ladies' Home Journal Aug 1, 1961
$65Ladies' Home Journal Sep 1, 1961
$65Ladies' Home Journal Dec 1, 1961
$65Scientific American Jan 1, 1955
$65Ladies' Home Journal Apr 1, 1962
$65Ladies' Home Journal Jun 1, 1962
$65Ladies' Home Journal Jul 1, 1962
$65Ladies' Home Journal Sep 1, 1962
$65Ladies' Home Journal Oct 1, 1962
$65Ladies' Home Journal Nov 1, 1962
$65Scientific American Jan 1, 1958
$65Ladies' Home Journal Dec 1, 1962
$61Scientific American Jan 1, 1960
$61Scientific American Feb 1, 1960
$61Scientific American Jul 1, 1960
$61Scientific American Aug 1, 1960
$61Scientific American Sep 1, 1960
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$61Scientific American Jun 1, 1961
$61Scientific American Jul 1, 1961
$61Scientific American Aug 1, 1961
$61Scientific American Sep 1, 1961
$61Scientific American Oct 1, 1961
$61Scientific American Dec 1, 1961
$61Scientific American Feb 1, 1962
$61Scientific American Apr 1, 1962
$61Scientific American May 1, 1962
$61Scientific American Jun 1, 1962
$61Scientific American Sep 1, 1962