| Date | Location | Event |
| May 2008 |
| May |
|
American Wetlands Month |
| May |
|
National Bike Month |
| May |
|
Clean Air Month |
| May 2 - 4 |
Madison, Wisconsin |
Going Green Wisconsin Expo |
| May 7 |
La Crosse, Wisconsin |
First Supply Green Training (4:00 - 7:00 PM) |
| May 8 |
Rochester, Minnesota |
First Supply Green Training (7:00 - 10:00 AM) |
| May 9 - 15 |
|
National Ground Water Week |
| May 11 |
|
Mother's Day |
| May 16 |
|
National Bike to Work Day |
| May 17 |
|
Armed Forces Day |
| May 19 |
|
First Supply eSupply Launch |
| May 22 |
|
International Day of Bio Diversity |
| May 26 |
|
Memorial Day |
| June 2008 |
| June |
|
American Rivers Month |
| June 5 |
|
World Environment Day |
| June 13 |
Dubuque, Iowa |
First Supply Annual Tool Day & Hog Roast (11am - ????) |
| June 14 |
|
Flag Day |
| June 15 |
|
Father's Day |
| June 20 |
|
National Bald Eagle Day |
| June 21 |
|
First Day of Summer |