salt and albumen print
These two closely related processes dominated the early years of photography to such an extent that most of us don’t even realise other processes existed simultaneously. Literally millions of photographs were made with their use every year, a whole industry catered to the needs of photographers working with them and the albumen papers remained in production and commercially available for a whole hundred years. Even the characteristic colour of the salted paper and albumen print is now seen as the characteristic colour of 19th century.