Congratulations You are invited to participate in a very special once-in-a-lifetime experience. Please do not share this invitation or discuss it with anyone.In New York Times bestselling author Dan Gutman's all-new series, which blends fascinating real history with an action-packed and hilarious adventure, four very different kids are picked by a mysterious billionaire to travel through time and photograph some of history's most important events. This time, the four friends are headed to 1863 to catch Abraham Lincoln delivering his famous Gettysburg Address. They'll have to work together to ask the right questions, meet the right people, and capture the right moment. And most important--not get caught Back matter separating fact from fiction makes Flashback Four the perfect mix of true history and uproarious fun.