Birthdays
George Bancroft
Turns 66 on this date
John Arthur Campbell
Turns 43 on this date
Edward Henry Rollins
Turns 42 on this date
Events
| Crime/Disasters | A passenger ship is sunk in a hurricane off the Carolina coast with very heavy loss of life. | 10/03/1866 |
| Campaigns/Elections | Conservative Republicans and Democrats of Massachusetts meet in Boston to nominate candidates. | 10/03/1866 |
| Crime/Disasters | In an Atlantic hurricane, a passing ship rescues all the passengers and crew of a foundering vessel. | 10/03/1866 |
| Campaigns/Elections | North Carolina Freedmen hold a four-day convention in Raleigh |
10/02/1866 to 10/05/1866 |
| Lawmaking/Litigating | The Treaty of Prague ends the Italian-Austrian War and cedes Venetia for transfer to Italy. | 10/03/1866 |