i've seen 3-ring binder polypropylene sleeves for "archival purposes".
anyone opine on poly sleeves, vs. tyvek, or both, as far as long term
storage goes. the manufacturer i looked at (erno.com) claimed they
had no adhesion problems with the poly sleeves....
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Things are not what they seem to be; nor are they otherwise.
-- Lankavatara Sutra