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The Scientific American Flying Machine Trophy for 1909 - p238
doi:10.1038/scientificamerican03271909-238
Superiority of Lock to Sea-Level Canal - pp241 - 242
doi:10.1038/scientificamerican03271909-241
The Scientific American Flying Machine Trophy - p242
doi:10.1038/scientificamerican03271909-242
The Navy's Dummy Drill Gun - p244
Walter L. Beasley
doi:10.1038/scientificamerican03271909-244
The Ice of the Arctic Waters - pp244 - 246
Day Allen Willey
doi:10.1038/scientificamerican03271909-244a
Tobogganing at Caux, Switzerland - p246
Deshler Welch
doi:10.1038/scientificamerican03271909-246
