The brand-new edition of Barron's "Let's Review U.S. History and Government, " designed as a supplementary textbook for New York State high school students taking the Regents exam, can be purchased as part of a two-book set with "Barron's U.S. History and Government Regents Exams and Answers. " The Power Pack represents a savings of $2.99 when compared to the prices of the books purchased separately.