Langenheim, Frederick, 1847, February, ‘22. For an Improvement in Coloring Daguerreotype Plates, by fixing the Colors thereon - American Patents‘, Journal of the Franklin Institute of the State of Pennsylvania, and American Repository, p. 105 [Patent was issued in January, 1846] [Δ] 
  
 
Themes: 
  
   Daguerreotypes 
   Daguerreotypes 
   Hand-painted photographs 
   Painting on photographs 
   Patents 
 
Photographers: 

Frederick Langenheim