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1st illustrated weekly magazine in US publishes 1st issue, NYC
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1st US wire suspension bridge for general traffic opens in Penn
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1st adhesive postage stamps in US (private delivery company), NYC
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1st known sewing machine patented in US, John Greenough, Wash DC
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1st US child labor law regulating working hours passed (Mass)
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US-Canada border defined by Webster-Ashburton Treaty
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Seminole War ends; Indians removed from Florida to Oklahoma
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US Naval Observatory authorized by an act of Congress
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1st edition of Pittsburgh Post-Gazette, published
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Fugitive slave George Latimer, captured in Boston