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While rearranging folders to reflect desired order, remove hardware (paper clips, rubber bands, string) and replace with acid-free paper "inserts" (kept in Room 419) to keep materials together. When pages have existing numbers or distinctive paper to differentiate them, paper inserts are not necessary. If staples indicate rust, always remove them. They should also be removed from materials that appear to be under duress.
Flagging
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Refoldering
Be sure to "square" the folders using the appropriate crease (along the bottom edge) for the thickness of the folder.