Published in Nautilus, in 1958, in volume 71, pages 83-84

Created: 2012-03-12, modified: 2012-03-12

Published in Nautilus, in 1958, in volume 71, issue 4, pages 151-152

Created: 2014-12-03, modified: 2014-12-03

Published in Nautilus, in 1958, in volume 72, pages 5-10

Created: 2012-03-12, modified: 2012-03-12

Published in The Nautilus, in 1958, in volume 72, pages 20-22

Created: 2010-11-22, modified: 2011-06-21