| |
Unidentified photographer
Invention for Improvement in Processes of Coloring Photographs
1878 (patent)
Colour photograph
National Museum of American History, Smithsonian Institution
ID Number: PG.000848
LL/97524
Patent number: 205,807
Patent consists of a method of preparing photographs for coloring: first immersing the photo in a "clearing solution of rosin and parrafine, each previously dissolved in turpentine, and then applying to the face a coat of rosin dissolved in alcohol, and to the back a coat of the clearing solution..." Common oil colors are then applied to the back "in the usual way."
| |
LuminousLint 
@LuminousLint