Deborah Kalb 
George Washington and the Magic Hat [EPUB ebook] 

Adventure, history, and the drama of school life intertwine in this engrossing tale of a fifth-grade boy struggling to find his place after his best friend abandons him. Find out what happens when Sam’s class takes a trip to Mount Vernon, where he accidentally buys a bossy three-cornered hat that sweeps him off to the eighteenth century and a warm friendship with George and Martha Washington. As Sam travels back and forth between his present-day life and incredible adventures with George Washington, he learns about history, himself, and the nature of friendship and families.