Published in Nautilus, in 1930, in volume 44, pages 1-4
Published in Nautilus Boston Mass, in 1930, in volume 44, pages 42-43
Published in Nautilus Boston Mass, in 1930, in volume 43, pages 115-116
Published in Nautilus Boston Mass, in 1930, in volume 44, pages 4-7
Published in Nautilus Boston Mass, in 1930, in volume 44, pages 15-16
Published in Nautilis, in 1930, in volume 43, pages 111-112
Published in Nautilis, in 1930, in volume 43, pages 118-119
Published in Nautilis, in 1930, in volume 43, pages 120-121
Published in Nautilis, in 1930, in volume 43, pages 121-128
Published in Nautilis, in 1930, in volume 43, pages 128-130
Published in Nautilis, in 1930, in volume 43, pages 130-131
Published in Nautilis, in 1930, in volume 43, pages 131-132
Published in Nautilis, in 1930, in volume 43, pages 133-134
Published in Nautilis, in 1930, in volume 43, pages 134-135
Published in Nautilis, in 1930, in volume 43, pages 135-138
Published in Nautilis, in 1930, in volume 43, pages 73-75
Published in Nautilis, in 1930, in volume 43, pages 75-77
Published in Nautilis, in 1930, in volume 43, pages 77-79
Published in Nautilis, in 1930, in volume 43, pages 79-85
Published in Nautilis, in 1930, in volume 43, pages 85-86
Published in Nautilis, in 1930, in volume 43, pages 87-88
Published in Nautilis, in 1930, in volume 43, pages 89-91
Published in Nautilis, in 1930, in volume 43, pages 92-93
Published in Nautilis, in 1930, in volume 43, pages 93-95
Published in Nautilis, in 1930, in volume 43, pages 95-101
Published in Nautilis, in 1930, in volume 43, pages 101-103
Published in Nautilis, in 1930, in volume 44, pages 37-41
Published in Nautilis, in 1930, in volume 44, pages 41-42
Published in Nautilis, in 1930, in volume 44, pages 44-48
Published in Nautilis, in 1930, in volume 44, pages 48-50
Published in Nautilis, in 1930, in volume 44, pages 50-53
Published in Nautilis, in 1930, in volume 44, pages 53-66
Published in Nautilis, in 1930, in volume 44, pages 66-67
Published in Nautilis, in 1930, in volume 44, pages 7-8
Published in Nautilis, in 1930, in volume 44, pages 10-13
Published in Nautilis, in 1930, in volume 44, pages 13-14
Published in Nautilis, in 1930, in volume 44, pages 16-17
Published in Nautilis, in 1930, in volume 44, pages 17-18
Published in Nautilis, in 1930, in volume 44, pages 21-24
Published in Nautilis, in 1930, in volume 44, pages 24-27