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The American Association at Madison, Wis - pp146 - 147
H. C. Hovey
doi:10.1038/scientificamerican09021893-146a
Bevel Gearing Cut Theoretically Correct - p148
doi:10.1038/scientificamerican09021893-148a
Exhibit of the Dixon Crucible Company at the Fair - pp149 - 150
doi:10.1038/scientificamerican09021893-149a
The Great German Search Lights at the World's Columbian Exposition - p152
doi:10.1038/scientificamerican09021893-152
The World's Columbian Exposition—State Buildings - pp153 - 154
doi:10.1038/scientificamerican09021893-153
Notes from the Worlds Columbian Exposition Chicago 1893 - p154
doi:10.1038/scientificamerican09021893-154