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How can important information and valuable items be kept safe as years pass? Many of these items are stored in underground vaults, including recordings and photos from U.S. history, important documents, and more. Locks, guards, secret passwords, and technology all play a part in the protection of the items. Learn more about these high-security places!
"A fascinating look at amazing high-security measures. A highly recommended series." - School Library Journal
April 1, 2020
Kaitlyn Duling believes in the power of words to change hearts, minds, and actions. An avid reader and writer who grew up in Illinois, she now resides in Washington, DC. She knows that knowledge of the past is the key to our future, and wants to ensure that all children and families have access to high-quality information. Kaitlyn has authored over eighty books for children and teens.
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