Philadelphia, PA, United States
Robert Cornelius. This metallurgist and brass founder opened one of the world's first photographic studios here in the spring of 1840. His collaboration with chemist Paul Beck Goddard in successful experiments to reduce exposure times made it possible to use the camera in portraiture.
Listen to the audio guide for Robert Cornelius and Paul Beck Goddard blue plaque Free on WIP — starts by itself when you arrive, even with the screen off