The missing part of the world’s oldest photographic lab
Petiot-Groffier’s Residence Discloses Yet Another Secret… After the dry lab, Petiot-Groffier’s wet lab had been found in his former residence – completing the discovery of the world’s oldest photographic lab. UA photographic lab – even the world’s oldest – may hide yet another one, as Pierre-Yves Mahé could experience himself lately, and with great pleasure….