| Religion/Philosophy |
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The National Unitarian churches of the United States hold their annual meeting in Syracuse, New York. |
| Slavery/Abolition |
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The Netherlands abolishes African slavery in the Dutch West Indies |
| Science/Technology |
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The new 730-ton side wheel gunboat U.S.S. Miami is launched at the Philadelphia Navy Yard |
| Science/Technology |
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The new Atlantic Cable transmits and receives its first messages between North America and Europe. |
| Lawmaking/Litigating |
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The new Confederate National Flag flies for the first time over the Confederate Capitol in Richmond |
| Business/Industry |
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The New Jersey State Agricultural Fair draws 30,000 people on its third day |
| Science/Technology |
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The new record-breaking suspension bridge across the Ohio between Cincinnati and Covington officially opens. |
| US/the World |
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The new republican government of France declares all slaves in French colonies to be free |
| Battles/Soldiers |
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The new steam sloop Juniata is launched at the Philadelphia Naval Yard |
| Lawmaking/Litigating |
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The new United States Secret Service goes into operation for the Treasury Department |
| Lawmaking/Litigating |
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The new Virginia legislature replaces the restrictive Alexandria Oath with the milder Amnesty Oath |
| Crime/Disasters |
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The New York bound immigrant ship "William Nelson" burns in mid-ocean and hundreds are lost |
| Battles/Soldiers |
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The New York City fire department welcomes home the Second Regiment of Fire Zouaves |
| Cultural |
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The New York College of Veterinary Surgeons is incorporated |
| Education/Culture |
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The New York Cricket Club hosts the Willow Club in a match at its home ground in Hoboken |
| Cultural |
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The New York Infimary for Women and Children is incorporated in New York City |
| Crime/Disasters |
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The New York Insane Asylum on Blackwell's Island is destroyed by fire but no lives are lost |
| Lawmaking/Litigating |
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The New York Legislature passes its first animal anti-cruelty law, to be enforced by the ASPCA |
| Slavery/Abolition |
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The New York State Anti-Slavery Convention meets in Albany and advocates the dissolution of the Union |
| Crime/Disasters |
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The New York steamship burns off Cape Hatteras and eleven aboard are killed. |
| Education/Culture |
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The New York turf season opens on Long Island with a $500 five heat trotting contest |
| Business/Industry |
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The New York World begins publication in New York City |
| Education/Culture |
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The New York Yacht Club holds its annual regatta around Manhattan |
| Education/Culture |
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The New York Yacht Club holds its annual regatta off the coast of Long Island |
| Education/Culture |
|
The New York Yacht Club holds its sixteenth annual regatta |
| US/the World |
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The new, seventeen year-old King George arrives in Athens to begin a popular and successful fifty year reign |
| Campaigns/Elections |
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The newly formulated Maryland Constitution of 1867 receives an overwhelming endorsement in a popular vote. |
| Battles/Soldiers |
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The newly purchased Confederate ship "Rappahannock" slips out of its English Channel port at midnight |
| US/the World |
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The newly sworn Emperor Maximilian of Mexico arrives in his capital city for the first time |
| US/the World |
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The newly-wed Prince and Princess of Wales dedicate the new building of the British Orphan's Asylum |
