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search Typewritten page of canary onionskin, 1912. Note the
translucency in the upper right corner, where the red library
stamp on the transverse is visible.  Onionskin or onion skin is
a thin, light-weight, strong, often translucent paper. Not made
from onions, it is named for their thin, papery skins which it
superficially resembles. It was usually used with carbon paper
for typing duplicates in a typewriter, for permanent records
where low bulk was important, or for airmail correspondence.[1]
It typically has a 9-pound basis weight, and may be white or
canary-colored.  In the typewriter era, onion skin often had a
deeply textured cockle finish which allowed for easier erasure
of typing mistakes, but other glazed and unglazed finishes were
also available then and may be more common today.  Onionskin
paper is relatively durable and lightweight due to its high
content of cotton fibers. Because of these attributes and its
crispness when folding, onions