The beginning of the nineteenth century saw the development of colour
printing using a Planographic technique.
In colour lithography a different stone was used for each colour tone
or highlight initially there was a chalk stone for the image and a second
tint stone for the background but as the process developed more stones
were added enabling different colour highlights to be added.
Pins in the corners kept the image printed from each successive stone
in accurate register until the desired built up image was completed.
The term colour lithograph or chromolithograph mean the same thing as
the printing technique was identical. A chromolithograph however more
often refers to a historically significant form of commercial colour