How do I preserve my books?

The most effective and economical preservation measures are preventive: proper storage, storage environment, and handling.

Good storage significantly prolongs the life and usability of books and includes:

  • A cool (room temperature or below), relatively dry (about 35-50% relative humidity), clean, and stable environment (avoid attics, basements, and other locations with high risk of leaks and environmental extremes)
  • Minimal exposure to all kinds of light; no exposure to direct or intense light
  • Regular dusting and housekeeping
  • Shelving books of similar size together, so that the face of the covers are maximally supported by the neighbors on each side
  • Keeping upright shelved books straight and not leaning (storing books lying flat is also good)

For more detailed information please refer to our guide Preserving Your Books.

If conservation treatment is needed, see How do I find a conservator?

Related Topics

Last Updated: Feb 24, 2025
Views: 5
FAQ Actions

Learn More

Preservation at the Library of Congress
Visit our website for more information about our programs and services.
Donations/Gifts of Library Materials
The Library welcomes inquiries about donations of library materials but cannot accept everything. Browse our Donations page for forms and additional information.

Additional Ways to Contact Us

Send written correspondence to:

Preservation Directorate
Library of Congress
101 Independence Ave. SE
Washington, D.C.  20540-4530

Please Note

We cannot provide: conservation (including review, examination, treatment), digitization/reformatting, access to/use of Library of Congress equipment, project funding, appraisals, recommendations for products or vendors, materials testing or analysis, preservation courses or classes, and/or responses to vendors seeking to sell or promote commercial products.