Published in Nautilus, in 1938, in volume 52, issue 1, pages 33
Published in Nautilus Philadelphia, in 1938, in volume 52, pages 49-51
Published in Nautilis, in 1938, in volume 51, pages 109-114
Published in Nautilis, in 1938, in volume 51, pages 115-118
Published in Nautilis, in 1938, in volume 51, pages 118-119
Published in Nautilis, in 1938, in volume 51, pages 119-122
Published in Nautilis, in 1938, in volume 51, pages 122-126
Published in Nautilis, in 1938, in volume 51, pages 126-131
Published in Nautilis, in 1938, in volume 51, pages 132-134
Published in Nautilis, in 1938, in volume 51, pages 134-135
Published in Nautilis, in 1938, in volume 51, pages 135-137
Published in Nautilis, in 1938, in volume 51, pages 137-140
Published in Nautilis, in 1938, in volume 51, pages 140-141
Published in Nautilis, in 1938, in volume 51, pages 142-143
Published in Nautilis, in 1938, in volume 51, pages 73-79
Published in Nautilis, in 1938, in volume 51, pages 79-85
Published in Nautilis, in 1938, in volume 51, pages 88-91
Published in Nautilis, in 1938, in volume 51, pages 91-97
Published in Nautilis, in 1938, in volume 51, pages 97-99
Published in Nautilis, in 1938, in volume 51, pages 100-104
Published in Nautilis, in 1938, in volume 52, pages 37-38
Published in Nautilis, in 1938, in volume 52, pages 46-48
Published in Nautilis, in 1938, in volume 52, pages 48-49
Published in Nautilis, in 1938, in volume 52, pages 51-54
Published in Nautilis, in 1938, in volume 52, pages 54-55
Published in Nautilis, in 1938, in volume 52, pages 56-59
Published in Nautilis, in 1938, in volume 52, pages 60-62
Published in Nautilis, in 1938, in volume 52, pages 62-63
Published in Nautilis, in 1938, in volume 52, pages 66-72
Published in Nautilis, in 1938, in volume 52, pages 1-4
Published in Nautilis, in 1938, in volume 52, pages 5-7
Published in Nautilis, in 1938, in volume 52, pages 7-9
Published in Nautilis, in 1938, in volume 52, pages 10-11
Published in Nautilis, in 1938, in volume 52, pages 11-14
Published in Nautilis, in 1938, in volume 52, pages 15-16
Published in Nautilis, in 1938, in volume 52, pages 16-20
Published in Nautilis, in 1938, in volume 52, pages 21-22
Published in Nautilis, in 1938, in volume 52, pages 22-24
Published in Nautilis, in 1938, in volume 52, pages 24-25
Published in Nautilis, in 1938, in volume 52, pages 25-26
Published in Nautilis, in 1938, in volume 52, pages 26-27
Published in Nautilis, in 1938, in volume 52, pages 27-29
Published in Nautilis, in 1938, in volume 52, pages 29-30
Published in Nautilis, in 1938, in volume 52, pages 30-32