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A copy made with carbon paper. Before the development of photographic copiers, a carbon copy was the under-copy of a typed or written document placed over carbon paper and the under-copy sheet itself (not to be confused with the carbon print family of photographic reproduction processes). [1]
Methods of copying handwritten letters Manifold stylographic writer, using early "carbonic paper" Letter copying book process; Mechanical processes Tracing to make accurate hand-drawn copies; Pantograph, manual device for making drawn copies without tracing, can also enlarge or reduce; Printmaking, which includes engraving and etching
Carbon paper (originally carbonic paper) consists of sheets of paper that create one or more copies simultaneously with the creation of an original document when inscribed by a typewriter or ballpoint pen. The email term cc which means ‘carbon copy’ is derived from this use of carbon paper.
Mimeographed images generally have much better durability than spirit-duplicated images, since the inks are more resistant to ultraviolet light. The primary preservation challenge is the low-quality paper often used, which would yellow and degrade due to residual acid in the treated pulp from which the paper was made.
A copying clerk would begin by counting the number of master letters to be written during the next few hours and by preparing the copying book. Suppose the clerk wanted to copy 20 one-page letters. In that case, he would insert a sheet of oiled paper into the copying book in front of the first tissue on which he wanted to make a copy of a letter.
Over 100 million photos: Various [54] Fortepan: archival photographs, and family snapshots of everyday life: CC BY-SA (100.000 images) Unsplash: user photo uploading and sharing service CC0 prior to 5 June 2017 [55] [56] Wikimedia Commons: free image and data repository, stores Wikipedia images: various free CC licenses (40+ million images in ...
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If the photographer's identity is unclear (for instance, if an image was uploaded stating the photographer's name and claiming a free license, but the image cannot be found on the web), ask them to confirm that the image is theirs. In any case, ask them to confirm the claimed license. For CC BY-SA, point out the points mentioned above.