1st EditionHOUGHTON MIFFLIN HARCOURT1,031 explanations
1st EditionGerald A. Danzer, J. Jorge Klor de Alva, Larry S. Krieger, Louis E. Wilson, Nancy Woloch614 explanations
1st EditionJames West Davidson, Michael B. Stoff1,235 explanations
2nd EditionAlan Brinkley, Albert S. Broussard, Donald A. Ritchie, James M. McPherson, Joyce Appleby1,370 explanations