| Date | Event |
|---|---|
| May 03 1877 | Labatt Park, Oldest Baseball Grounds Has First Game |
| May 05 1877 | American-Indian Wars, Avoid Harassment Of U.S |
| May 06 1877 | Crazy Horse Surrenders In Nebraska |
| May 08 1877 | First Westminster Dog Show At Gilmore's Gardens |
| May 09 1877 | Romania Declares Independence |
| May 09 1877 | 8.8 Quake Hits Peru, Kills 2,541 |
| May 10 1877 | Mihail Kogălniceanu Declares Romanian Independence |
| May 16 1877 | May 1877 Political Crisis In France |