Already in use at Georgia State University and at the University of Georgia, American Yawp by Ben Wright and Joseph Locke (eds.) won a 2014 Digital Humanities Award for Best Use of Digital Humanities for Public Engagement. 2015-2016 Edition Updates have been added to the book.
From the book’s website:
In an increasingly digital world in which pedagogical trends are de-emphasizing rote learning and professors are increasingly turning toward active-learning exercises, scholars are fleeing traditional textbooks. Yet for those that still yearn for the safe tether of a synthetic text, as either narrative backbone or occasional reference material, The American Yawp offers a free and online, collaboratively built, open American history textbook designed for college-level history courses. Unchecked by profit motives or business models, and free from for-profit educational organizations, The American Yawp is by scholars, for scholars. All contributors—experienced college-level instructors—volunteer their expertise to help democratize the American past for twenty-first century classrooms.