| # | Date | Location | Venue | Detail |
|---|---|---|---|---|
| 1 | 1971-05-15 | Lowell MA | Rogers Hall School | |
| 2 | 1974-05-15 | Washington D.C. | Constitution Hall | |
| 3 | 1975-05-15 | Boston MA | Boston Garden | |
| 4 | 1978-05-15 | Atlanta GA | The Omni | |
| 5 | 1990-05-15 | New Orleans LA | Louisiana Superdome | |
| 6 | 1997-05-15 | Helsinki FIN | Hartwall Areena | |
| 1999-05-15 | George WA | The Gorge Amphitheatre | Cancelled |