Birthdays
Henry Laurens Benbow
Turns 37 on this date
Zachariah Cantey Deas
Turns 47 on this date
William James Hiss
Turns 34 on this date
Giles Waldo Hotchkiss
Turns 51 on this date
John Pendleton Kennedy
Turns 71 on this date
Events
| Campaigns/Elections | Republicans score significant victories in the West Virginia state elections. | 10/25/1866 |
| Education/Culture | The Peabody Institute building is dedicated in Baltimore, Maryland | 10/25/1866 |
| Battles/Soldiers | With impressive ceremony in Brooklyn, 3000 Long Island veterans are presented with service medals | 10/25/1866 |