Birthdays
Lucien Anderson
Turns 36 on this date
Daniel Smith Donelson
Turns 59 on this date
John Jay II
Turns 43 on this date
Robert Milligan McLane
Turns 45 on this date
Young Marshall Moody
Turns 38 on this date
Henry Hamilton Pfeiffer
Turns 28 on this date
Events
| Science/Technology | A large new comet, visible to the naked eye, is observed all over the northern hemisphere |
06/18/1860 to 06/25/1860 |
| Campaigns/Elections | Breakaway delegates in Baltimore nominate John C. Breckinridge, splitting the Democratic Party | 06/23/1860 |
| US/the World | First Japanese diplomatic mission to the United States lavishly entertained in New York City |
06/16/1860 to 06/28/1860 |
| US/the World | In London, Queen Victoria reviews 21,000 men of the Volunteer Movement in Hyde Park | 06/23/1860 |
| Lawmaking/Litigating | The 36th U.S. Congress is in session in Washington, D.C. |
12/06/1859 to 06/24/1860 |
| Campaigns/Elections | The depleted Democratic National Convention in Baltimore nominates Stephen Douglas for President | 06/23/1860 |
Documents
| Newspaper | Atchison (KS) Freedom's Champion, “Noble Deeds of Northern Democracy,” June 23, 1860 | 06/23/1860 |