| 
Event table notes
 | 
| Event data |  | 
   | Place: Boston, Massachusetts |  
   | Start date: Aug. 1861 |  
   | End date:   Sep. 1861 |  |  |  
   | Notes: |  
   | Offhand games played by these players, during the time they played their more formal match. |  |  |  |  
   | References |  | 
| Periodicals |  
   | [Era], vol. 24, no. 1213, 22 Dec. 1861, page 4 |  |  |