This is a set of ABeka 4th grade History of Our United States (4th ed) books.  The books included are the student book (#108626) and the answer key to text questions (#143707).   Both books are in good condition.  Ten pages in chapter 7 and three pages in chapter 1 have some yellow highlighting.  Some of the pages in chapter 1 have an ink notation of when a certain slide should be shown.  Otherwise no writing or highlighting.  Thanks for your interest!  It is appreciated!!