Dive into the history, culture, and heritage of the state of Maryland with Who HQ! Learn about everything from the Chesapeake Bay to the birth of the US Postal Service in this illustrated book for young readers. From the creators of the #1 New York Times bestselling Who Was? series comes a new collection of books all about the fifty states! Are you aware that Maryland is the state where the first United States flag was stitched? Did you know it is the place where the crown-shaped bottle caps we still use today were invented? Or that Harriet Tubman was born there? This book explores Maryland's rich history and culture, from Fort McHenry to the Ocean City Boardwalk.