Birthdays
Frederick Theodore Frelinghuysen
Turns 49 on this date
William Leonard Helfenstein
Turns 61 on this date
Henry Washington Hilliard
Turns 58 on this date
George Proctor Kane
Turns 49 on this date
William H. Mathews
Turns 17 on this date
Oliver Hazard Perry Throck Morton
Turns 43 on this date
Robert Purvis
Turns 56 on this date
Charles Roome
Turns 54 on this date
Events
| Crime/Disasters | In London, cholera continues its European assault, killing five thousand in two weeks. |
07/29/1866 to 08/04/1866 |
| Battles/Soldiers | In Mexico, Republican forces enter Tampico. | 08/04/1866 |
| Campaigns/Elections | Union war hero George Armstrong Custer becomes the head of the Soldiers and Sailors Union. | 08/04/1866 |
Documents
| Executive record | Andrew Johnson to Philip H. Sheridan, Washington, DC, August 4, 1866. | 08/04/1866 |