| Education/Culture |
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The New York turf season opens on Long Island with a $500 five heat trotting contest |
| Religion/Philosophy |
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Passover |
| US/the World |
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Paraguayan naval forces attack the river port of Corrientes and so bring Argentina into their war with Brazil |
| Battles/Soldiers |
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Near Wetumpka, Alabama, nineteen year Union Major John F. Weston, a future general, wins the Medal of Honor |
| Crime/Disasters |
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A late night fire causes heavy damage to workshops and warehouses in Rockford, Illinois |
| Religion/Philosophy |
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Good Friday |
| Crime/Disasters |
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Lewis Powell attempts to assassinate Secretary of State William Seward in Washington, DC |
| Crime/Disasters |
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John Wilkes Booth shoots President Lincoln during the play "Our American Cousin" at Ford’s Theatre |
| Battles/Soldiers |
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In Charleston Harbor, General Robert Anderson re-hoists the United States flag over Fort Sumter |
| Lawmaking/Litigating |
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In New York City, Secretary of War Stanton's suspension of the draft and all recruiting is met with rejoicing |
| Crime/Disasters |
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President Lincoln's body taken from Petersen's Boarding house to the White House two hours after death |
| Crime/Disasters |
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Reckless remark over the death of President Lincoln leads to mob violence in Fall River, Massachusetts |
| Crime/Disasters |
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Fugitive John Wilkes Booth rides into Maryland and reaches the farm of Dr. Samuel Mudd at four a.m. |
| Crime/Disasters |
|
President Lincoln dies from the head wound John Wilkes Booth inflicted eight hours before |
| Legal/Political |
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Vice-President Andrew Johnson takes the oath as seventeenth President of the United States |
| Crime/Disasters |
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In New York City, a destructive fire cause heavy losses on the riverfront warehouse district |
| Religion/Philosophy |
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Easter Sunday |
| Crime/Disasters |
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John Wilkes Booth and David Herold continue their flight across Maryland then hide in a remote thicket |
| Crime/Disasters |
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Assassination conspirator Samuel Arnold is arrested in the morning at Fortress Monroe in Virginia |
| Crime/Disasters |
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In Baltimore, assassination conspirator Michael O'Laughlin is arrested in the morning in Baltimore |
| Crime/Disasters |
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John Wilkes Booth and David Herold are hiding from their pursuers in a remote Maryland pine thicket |
| Crime/Disasters |
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Mary Surratt and Lewis Powell are arrested in a late night War Department raid on Surratt's boarding house |
| Battles/Soldiers |
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In North Carolina, CSA General J. E. Johnston opens surrender talks with Union General W. T. Sherman |
| Science/Technology |
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In Philadelphia, a new public hospital for contagious diseases is turned over to the Board of Health |
| Religion/Philosophy |
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Passover ends |
| Battles/Soldiers |
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General W.T. Sherman, negotiating Confederate surrender in North Carolina, makes a political blunder |
| Personal |
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The funeral service for President Lincoln takes place in the White House East Room at noon |
| Crime/Disasters |
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George Atzerodt, failed assassin in the John Wilkes Booth conspiracy, is captured in Maryland |
| Crime/Disasters |
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At the War Department, Secretary Stanton announced large rewards for the capture of the Lincoln conspirators |
| Personal |
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The body of slain President Lincoln is laying in state in the United States Capitol rotunda |