Mount Rushmore's Hidden Room and Other Monumental Secrets

(Part of Secrets of American History)

Laurie Calkhoven

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You Can't Bring a Sandwich to the Moon . . . and Other Stories about Space!

(Part of Secrets of American History)

Laurie Calkhoven

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Fearless Flyers, Dazzle Painters, and Code Talkers!

(Part of Secrets of American History)

Elizabeth Dennis

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Heroes Who Risked Everything for Freedom

(Part of Secrets of American History)

Patricia Lakin

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Secret Agents! Sharks! Ghost Armies!

(Part of Secrets of American History)

Laurie Calkhoven

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The Founding Fathers Were Spies!

(Part of Secrets of American History)

Patricia Lakin

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