| Camera Maker | Canon | Camera Model | Canon EOS-1Ds Mark III |
| Aperture | f/2.8 | Exposure Value | 0 EV |
| Exposure Program | Manual | Exposure Time | 1/3200 sec |
| Flash | No Flash | Focal Length | 70 mm |
| ISO | 100 | Metering Mode | Pattern |
| Date/Time | 2011:10:20 11:23:23 | Resolution Unit | Inch |
| X Resolution | 240 dots per ResolutionUnit | Y Resolution | 240 dots per ResolutionUnit |
| Compression | Jpeg Compression | Exposure Mode | 1 |
| Subject Distance | 2.65 | Keywords | London Coffee House historic marker slavery PA bondage serfdom attraction destination display education information landmark marker sign slave tourist inspecting Philadelphia attractive educating historical marker Historical Site Historical Sites info Philadelphia County Place of Interest Places of Interest public auction road side Road sign Roadside signage tour tourism tourist attraction Tourist Destination Tourist Destinations travel Travel Destination Travel Destinations examining Pennsylvania appealing enslavement no people sightseeing text checking United States attract history nobody sightsee word daytime destinations displays historic markers landmarks Jason O. Watson / historical-markers.org markers scrutinizing signs slaves tourists United States of America appeal color image educate historic outdoor vertical day examination historical markers public auctions road sides tourist attractions tours colour image historical outside day time inspection day-time scrutiny US words color images daylight inspect outdoors USA verticals examinations colour images examine natural light outsides U.S. inspections U.S.A. check scrutinize historic site sign with text |
| Caption | LONDON COFFEE HOUSE Scene of political and commercial activity in the colonial period, the London Coffee House opened here in 1754. It served as a place to inspect Black slaves recently arrived from Africa and to bid for their purchase at public auction. Pennsylvania Historical and Museum Commission, 1991 |