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Railroads at the Close of the Year 1848 - p121
doi:10.1038/scientificamerican01061849-121b
The Scientific American--Subscribe for a Good Work - p122
doi:10.1038/scientificamerican01061849-122
Application of the Telegraph for a Fire Alarm - p125
doi:10.1038/scientificamerican01061849-125b
Extracts arranged from Leonard's Mechanical Principia - p125
doi:10.1038/scientificamerican01061849-125f
Back Volumes of the Scientific American - p125
doi:10.1038/scientificamerican01061849-125i
American Cotton and cotton Manufactures - p126
doi:10.1038/scientificamerican01061849-126
