Published in Nautilus Philadelphia, in 1950, in volume 63, pages 85-87

Published in Nautilus Philadelphia, in 1950, in volume 63, pages 87-97

Published in Nautilus Philadelphia, in 1950, in volume 63, pages 109-110

Published in Nautilus Philadelphia, in 1950, in volume 63, pages 111-112

Published in Nautilus Philadelphia, in 1950, in volume 63, issue 3, pages 78-80

Published in Nautilus Philadelphia, in 1950, in volume 64, pages 9-14

Published in Nautilus Philadelphia, in 1950, in volume 64, pages 34

Published in Nautilus Philadelphia, in 1950, in volume 64, pages 37-39

Published in Nautilus Philadelphia, in 1950, in volume 64, pages 51-53