The Charles River divides Boston and Cambridge, and the Red Line ties the ?cities together, traveling through an expanse of class and cultures along its route?.? When an unlikely combination of riders share an afternoon train, they are surprised ?to discover what's common in their American experience?.? Part of the prestigious Open Door Series, originally designed for adult literacy in? Ireland, these books confirm the truth that a story doesn't have to be big to change ?our world?.? Yankee Doodle is part of the US launch of Open Door books written by? North American authors?.