When Eugene Disderi patented the carte de visite in 1855 he was thinking that cheap mass-production of photographs might get him out of bankruptcy. In a few years his idea would mak him one of the richest men in France.His idea relied on two new developments; the wet collodion process which made multiple prints from glass plates possible, and a ,ulti lensed camera invented by compatriot Atoine Claudet which took several photographs simultaneously. The CDV revolutionized the commerce of photography. Once the idea of owning a photograph of a complete stranger was unthinkable. Suddenly people were madly collecting them, and not just portraits of the famous but of types, of gimmicks and staged scenes. It gave us the idea of buying photographs for their own sake, but more importantly, of making family albums.Ths anonymous nurse was one of thousands who sat for Disderi in the 1860s.