Instead of a text book that is influenced by the publisher and various others, why not just give every student a copy of this. No spin, no editorializing. Just the actual words of the founding documents as they were originally penned.
http://www.amazon.com/Declaration-Indep ... ted+states
http://www.amazon.com/Declaration-Indep ... ted+states
To encourage people everywhere to better understand and appreciate the principles of government that are set forth in America’s founding documents, the Cato Institute published this pocket edition of the Declaration of Independence and the Constitution of the United States of America. With more than three million copies in print, this edition’s influence has been observed far and wide. It has been held up by senators at press conferences and by representatives during floor debate; found in federal judicial chambers across the country; appeared at conferences on constitutionalism in Russia, Iraq, and elsewhere; and sold at U.S. Park Service stores, Restoration Hardware, and book stores around the country.