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<p>[QUOTE=&quot;2manybooks, post: 9546976, member: 8267&quot;]It might be helpful if we could see photos of the etching you intend to buy. Is it just black ink, or are there colors?</p><p><br /></p><p>The causes of foxing can be varied. Sometimes it is caused by fungi, but more often it seems to be due to corrosion of tiny metal contaminants that came from the machinery used in making the paper. Sometimes it may be a combination of interactions - the metal contaminants causing localized degradation of the cellulose, which renders it more subject to fungal activity. </p><p><br /></p><p>I routinely use rubbing alcohol to wipe down the exterior of books that show signs of mildew, and some sources suggest an alcohol spray (which I have not used). For a single piece of paper, you might try &quot;fumigating&quot; it by putting alcohol in the bottom of a container you can seal, and support the paper (flat or rolled) on a screen or rack above the alcohol. I would not anticipate any problems with a black and white etching, but the reaction of any colors might be more problematic.</p><p><br /></p><p><a href="https://www.ifla.org/treating-fungal-and-mould-infestation/" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.ifla.org/treating-fungal-and-mould-infestation/" rel="nofollow">https://www.ifla.org/treating-fungal-and-mould-infestation/</a>[/QUOTE]</p><p><br /></p>

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