Charles Thurston Thompson 1858 Exhibition of the Photographic Society of London and the Société Française de photographie at the South Kensington Museum
Thompson's view of the 1858 Exhibition of the Photographic Society of London and the Société Française de photographie at the South Kensington Museum is the earliest known photograph of a photographic exhibition. It shows a densely-packed gallery of photographs displayed in what was then called the Refreshment upper room.