Discover the thrilling side of the history of famous landmarks and monuments in this fact-tastic, nonfiction Level 3 Ready-to-Read, part of a series about the secrets of American History!Did you know that President Franklin Roosevelt had a secret train station in New York City? Or that there’s a hidden room inside Mount Rushmore? Unearth secrets about these monuments and more in this book about historical places! Secrets of American History is an action-packed nonfiction Level 3 Ready-to-Read series that lets beginning readers in on a little secret: history is full of surprises! Want to know what invisible ink has to do with the American Revolution? Or why shark repellant and inflatable army tanks were used in World War II? Find out in this fact-filled series of fascinating true tales, wild adventures, and spy missions, and discover the secret side of American history! A special section at the back of the book includes Common Core–vetted extras on subjects like science, social studies, and math, and there’s even a fun quiz so readers can test themselves to see what they’ve learned! Learning about history has never been so much fun!