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<p>[QUOTE=&quot;Figtree3, post: 37421, member: 33&quot;]It all depends on how careful you want to be, and what you want to buy. The sites I linked mostly talk about proper care and storage conditions. The Library of Congress one included a link to the following page, which I should have included:</p><p><br /></p><p><a href="http://www.loc.gov/preservation/care/paper.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.loc.gov/preservation/care/paper.html" rel="nofollow">http://www.loc.gov/preservation/care/paper.html</a></p><p><br /></p><p>And this one is good, although it&#039;s talking about photos rather than the types of things you are talking about.</p><p><a href="http://www.archives.gov/preservation/family-archives/storing-photos.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.archives.gov/preservation/family-archives/storing-photos.html" rel="nofollow">http://www.archives.gov/preservation/family-archives/storing-photos.html</a></p><p><br /></p><p>There are different types of Mylar (which is a brand name owned by the DuPont company). The real generic term is polyester film.&nbsp; According to this old article, not all Mylar is archival quality. <a href="http://cool.conservation-us.org/byorg/abbey/an/an13/an13-5/an13-507.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://cool.conservation-us.org/byorg/abbey/an/an13/an13-5/an13-507.html" rel="nofollow">http://cool.conservation-us.org/byorg/abbey/an/an13/an13-5/an13-507.html</a></p><p><br /></p><p>They recommended using Mylar D, which apparently is no longer being produced by that name by DuPont. Other names for polyester film of archival quality are&nbsp; Melinex 516, Melinex 456, or SKC type SH72S.[/QUOTE]</p><p><br /></p>

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