Carbons
from Fancyclopedia 2 ca. 1959
(1) Short for carbon copies, especially those which smart people keep of their correspondence.

(2) the sheets used to make ditto and hekto masters, because they look like the carbons used for (1) tho actually they're coated with methyl violet or some other alcohol-soluble dye.
from Fancyclopedia 1 ca. 1944
Short for carbon copies, especially those which smart people keep of their correspondence.