, PA
| Mitch Fraas 

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|    
| Library Company of Philadelphia Cassatt House 1320 Locust Street Philadelphia, PA
| Nicole Scalessa

|- 
| (7:00 p.m. chiudi)  
| Temple University The Samuel Paley Library, Ground floor 1210 Polett Walk Philadelphia, PA
| Matt Shoemaker

|- 
|       
| Chemical Heritage Foundation 315 Chestnut Street Philadelphia, PA See directions.
| Mary Mark Ockerbloom
|}