| Battles/Soldiers |
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Confederate Kentucky cavalry infiltrate southern Indiana on a daring reconnaissance mission |
| Battles/Soldiers |
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General Ulysses S. Grant fires his troublesome and ambitious subordinate, James A. McClernand |
| US/the World |
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In England, the Marquis of Hastings is fined for organizing cock-fighting at his country seat |
| Crime/Disasters |
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New York City doctor arrested as an abortionist after the death of a married woman |
| Education/Culture |
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The Philadelphia Athletic Club's baseball tour of New York continues with another victory in Brooklyn |
| Crime/Disasters |
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In Evansville, Indiana, a large fire destroys a tobacco factory and other structures |
| Crime/Disasters |
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Federal draft official shot dead from ambush in Sullivan County, Indiana |
| Crime/Disasters |
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Three soldiers of the Union Army's XXII Corps are executed for desertion |
| Education/Culture |
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The New York Cricket Club hosts the Willow Club in a match at its home ground in Hoboken |
| Battles/Soldiers |
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Baltimore barricades itself against the Confederate advance |
| Battles/Soldiers |
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In Pennsylvania, New York militia move south from Harrisburg to defend Chambersburg |
| Campaigns/Elections |
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In Wheeling, West Virginia, Arthur Boreman is inaugurated as the first governor of the new state |
| Battles/Soldiers |
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The Second Corps of the Army of Virginia crosses the Potomac and marches on Pennsylvania |
| Religion/Philosophy |
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In a sermon, Archbishop Hughes of New York blames the Confederacy for the continued bloodshed |
| Crime/Disasters |
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In Newburgh, New York, an African-American accused of rape is taken from jail and lynched |
| Science/Technology |
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The summer of 1863 begins at precisely 5:54 pm, Washington DC time |
| Battles/Soldiers |
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Near Upperville, Virginia, Union cavalry again clashes with the Confederate cavalry screen |
| Business/Industry |
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In New York, a Hudson River steamer breaks the record time from New York City to Poughkeesie |
| Education/Culture |
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In London, Speke and Grant describe their finding the Nile's source to the Royal Geographical Society |
| Battles/Soldiers |
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Near Greencastle in Franklin County, a Union cavalry probe meets Lee's invasion of Pennsylvania |
| Personal |
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Twenty year William H. Rihl becomes the first Union soldier killed meeting Lee's invasion |
| US/the World |
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The Alexandra Case, over British neutrality in ship-building, opens in London |
| Battles/Soldiers |
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L. Walter Buckingham, war reporter for the New York Herald, is killed in guerrilla attack in Virginia |
| Crime/Disasters |
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Iowa infantry officer dismissed from the Army for drunkenness and sleeping with a freed slave woman |
| Crime/Disasters |
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Young female Chicagoan fined $25 for attending the opera disguised as a man |
| Education/Culture |
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In New York City, Columbia University holds its 109th Commencement |
| Lawmaking/Litigating |
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War Department sets generous cash bounties for veterans who reenlist in the Union Army |
| Business/Industry |
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In Pennsylvania, Confederate soldiers destroy the iron works of Congressman Thaddeus Stevens |
| 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 |
| Battles/Soldiers |
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In Pennsylvania, New York Militia units prepare a defense of Carlisle against the Confederate advance |