1st EditionHOUGHTON MIFFLIN HARCOURT1,031 explanations
1st EditionDeborah Gray White, William Deverell1,024 explanations
2nd EditionAlan Brinkley, Albert S. Broussard, Donald A. Ritchie, James M. McPherson, Joyce Appleby1,370 explanations
1st EditionMCDOUGAL LITTEL1,105 explanations