| Date | Event |
|---|---|
| May 01 1840 | The Penny Black Is The First Official Stamp |
| May 06 1840 | Postage Stamp Okayed In United Kingdom |
| May 07 1840 | Natchez, Mississippi: Tornado Kills 317 |
| May 20 1840 | York Minster Is Badly Damaged By Fire |
| May 22 1840 | Britain Ends Convict Colonization |