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The Otis Elevators at the Columbian Exposition - pp273 - 274
doi:10.1038/scientificamerican10281893-273
Notes from the Worlds Columbian Exposition Chicago 1893 - p275
doi:10.1038/scientificamerican10281893-275
Suckow's Machine for Squeezing Puddlers' Balls and the Mannesmann Seamless Tube Machine - p277
doi:10.1038/scientificamerican10281893-277
New Apparatus for Artificial Respiration - p280
doi:10.1038/scientificamerican10281893-280
Prize Cattle at the World's Columbian Exposition - p281
doi:10.1038/scientificamerican10281893-281
