List of 2004 Massachusetts Costume Conventions
| Convention | Dates | Location |
|---|---|---|
| Cosplay Human Chess 2004 | November 20, 2004 | Harvard University, Pforzheimer House Cambridge, MA, USA |
| Convention | Dates | Location |
| Convention | Dates | Location |
|---|---|---|
| Cosplay Human Chess 2004 | November 20, 2004 | Harvard University, Pforzheimer House Cambridge, MA, USA |
| Convention | Dates | Location |