Birthdays
Henry Washington Benham
Turns 53 on this date
John Curtis Caldwell
Turns 33 on this date
John Bullock Clark Sr.
Turns 64 on this date
Charles Collins
Turns 53 on this date
Mifflin Wistar Gibbs
Turns 38 on this date
John Sedgwick Cleveland Robinson
Turns 49 on this date
Events
| US/the World | British naval and land units arrive to defend Campobello Island from a Fenian Raid | 04/17/1866 |
| Science/Technology | On the Thames, after much difficulty, a massive new Royal Navy warship is launched | 04/17/1866 |
| Crime/Disasters | Serious civil disturbances rock Norfolk, Virginia, bringing federal troops to restore order |
04/16/1866 to 04/17/1866 |
| Legal/Political | The first session of the 39th Congress is sitting in Washington DC from early January to late July, 1866 |
01/07/1866 to 07/27/1866 |
Documents
| Military record | Brigadier General Edward D. Townsend to Major General Oliver O. Howard, Washington, D.C., April 17, 1866 | 04/17/1866 |