"United States" . . . . "How to prepare for college board achievement tests: social studies, American history" . . . . "Barron's how to prepare for college board achievement tests: social studies, American history" . . . . "Barron's how to prepare for college board achievement tests, social studies, American history" . "Study guides" . "An outline history of the United States designed to give students a factual summary of events." . . "History" . . . "Outlines and syllabi" . .