Tim writes about surprising and fascinating topics in history and strives to make the past accessible and relevant to everyone. His writing combines hands-on experience with research, observation, insider perspective and a conversational style. He focuses on multiple perspectives in history and always attempts to incorporate interesting primary source materials. (George Washington's letter to his dentist during the American Revolution! It was confiscated by the British and is now part of the collection of British General Henry Clinton papers in a library in Michigan). Tim's new book, The World Turned Upside Down, his sixth book and fourth middle grade nonfiction book tells the story of how the combined American and French forces surprised the British General Cornwallis at Yorktown and how the young French general Lafayette embraced the American cause and found an unusual person to serve as a spy for him in the British camp. James, an enslaved man, remains a mystery but his compelling story offers insight into the cost of pursuing freedom. Tim's book First Flight Around the World (Abrams, 2015) was a finalist for the YALSA Excellence in Nonfiction Award in 2016. He lives in northern Virginia and completed twenty years working at the Smithsonian Institution. He is currently writing and running a museum/history consulting business. grovehistoryconsulting.com