Keywords: GeorgeWilsonBridgesCalotypeInvert.jpg George Wilson BridgesGeorge Wilson Bridges in 1848 has been digitally inverted to create this image http //www artnet fr/PDB/PublicLotDetails aspx lot_id 426237137 George Wilson Bridges 1848 PD-old A negative can be seen here GeorgeWilsonBridgesCalotypt jpg Calotypes George Wilson Bridges Temple of Zeus in Athens 1848 |