Published in Nautilus, in 1951, in volume 64, issue 4, pages 110-116

Published in Nautilus Philadelphia, in 1951, in volume 64, pages 73-77

Published in Nautilus Philadelphia, in 1951, in volume 64, pages 91-93

Published in Nautilus Philadelphia, in 1951, in volume 64, pages 94-96

Published in Nautilus Philadelphia, in 1951, in volume 64, pages 116-119

Published in Nautilus Philadelphia, in 1951, in volume 64, pages 119-120

Published in Nautilus Philadelphia, in 1951, in volume 64, pages 123-131

Published in Nautilus Philadelphia, in 1951, in volume 64, pages 133-134

Published in Nautilus Philadelphia, in 1951, in volume 65, pages 3-6

Published in Nautilus Philadelphia, in 1951, in volume 65, pages 6-8

Published in Nautilus Philadelphia, in 1951, in volume 65, pages 20-22

Published in Nautilus, in 1951, in volume 65, pages 57-61