Another Exciting Set of Biographies Correlated to the History Curriculum Primary sources and clear, challenging text will bring these American heroes to life for your students. Dynamic, full-color photos help reinforce and extend the learning in these 112-page supplemental reading books. Commit early to purchasing all twelve titles in this newest set and save $2.00 off each book. That's a $24.00 savings off our regular twelve-book price of $383.40.