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Event table notes
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| Event data |  | 
   | Place: Philadelphia |  
   | Start date: 1880 |  
   | End date:   1880 |  |  |  
   | Notes: |  
   | Reichhelm says that Mackenzie 'wound up the year's proceedings with a visit', so presumably these games were played late in the year. |  |  |  |  
   | References |  | 
| Books |  
   | Reichhelm and Shipley, Chess in Philadelphia, page 13 |  |  |