This recent article in the Washington Post, on the current exhibition of the letter written by Mary, Queen of Scots in the final hours before her execution, mentions the light sensitivity of the item, and the choice to use "...basically its whole light budget. It won't be out again for a long time". Nice to see awareness of these issues trickling into mainstream press coverage!
https://www.washingtonpost.com/world/2026/03/09/mary-queen-scots-letter-museum/
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Cindy Connelly Ryan
Library of Congress
Silver Spring MD
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