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The How and the Where and the Which and the When - p249
doi:10.1038/scientificamerican05011847-249
Distance between Boston and New York by the Norwhich Route - p249
doi:10.1038/scientificamerican05011847-249f
Wm. Hanley & Co.'s Improved Waterville Paint Mill - p252
doi:10.1038/scientificamerican05011847-252e
Bagley's Patent Extension Penholder and Pencil - p255
doi:10.1038/scientificamerican05011847-255d