[Cynette]

Carbon copy - the true meaning of the "cc" found at the bottom of documents, from the time when the secretary (another word we no longer use as the person who provides the greatest assistance in an office) would place a sheet of carbon paper between two or more documents as they were typed, producing a duplicate.

mimeograph and ditto machines - the way copies were made before the photo-copier. Ah the memories of the smell of the freshly dittoed purple papers (which apparently was a relatively nasty solvent with central nervous system effects!)