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Preserve Important Paper Documents in 6 Steps: Light, Humidity and Folders

For irreplaceable paper records, choose stable cool and relatively dry storage, flat support, and appropriate archival enclosures.

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Filing everyday papers differs from preserving originals and family records. The US Library of Congress recommends preventive storage and careful handling. This is physical preservation advice, not legal retention guidance.

Your try-it-at-home checklist

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1. Separate irreplaceable originals from routine reference papers. Distinguish copies, and store personal information securely.
2. Keep originals flat and away from direct or intense light. Do not force folds open in fragile paper.
3. Avoid attics, basements, leaks, radiators and vents. The Library of Congress recommends a stable, cool, relatively dry space of about 35–50% relative humidity for paper preservation.
4. For long-term care, choose acid- and lignin-free archival folders and boxes. An ordinary office-folder photo does not imply archival-grade materials.
5. Support each paper flat without heavy items above it. Consult a conservator before applying films or tapes to delicate or flaking media.
6. Label the outside of boxes with contents and inspection date; check periodically for water, pests or mold. Seek professional conservation advice for deteriorating originals.

Library of CongressHow do I preserve my letters or paper documents? ↗FAQ updated 2026-08-04: stable room-temperature or cooler conditions, ~35-50% relative humidity, no intense light, flat support, acid- and lignin-free storage; cautions about media sensitivity.Wikimedia CommonsManila Folders.jpg ↗File-specific copyright holder blinry, colour correction history by Hohum, CC BY-SA 4.0; example office folders are not verified acid-free archival stock.Wikimedia CommonsReusing content outside Wikimedia/technical ↗Direct hotlinking is permitted, but per-file license terms remain mandatory. Original file displayed and credited.

Your try-it-at-home checklist

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