72 Perfectly Sync'd "Who Was" Books that match up to Cycle 1, Cycle 2, and Cycle 3
 
Books Included are as follows:
Cycle 1
King Tut, Pompeii, 7 Wonders, Julius Caesar, Alexander the Great, Jesus, Queen Victoria, Mohandas Gandhi, Confucius, Dalai Lama, Machu Picchu, Genghis Khan, Marco Polo, Queen Elizabeth, Galileo, Chichen Itza, Michelangelo, Sitting Bull, Mozart, Great Depression, Earnest Shackleton, March on Washington, Berlin Wall, White House
 
Cycle 2
Great Pyramids, Great Wall, Castles and Knights, The Plague, Joan of Arc, Leonardo DaVinci, William Shakespeare, Ferdinand Magellan, Henry VIII, Catherine the Great, Marie Antionette, Napoleon, Henry Ford, Nicolai Tesla, Albert Einstein, Claude Monet, Sir Issac Newton, Winston Churchill, Wright Brothers, Vietnam War, Ronald Reagan, Coretta Scott King, Marie Curie, Nelson Mandela
 
Cycle 3
Columbus, First Thanksgiving, Boston Tea Party, Declaration of Independence, George Washington, Lewis and Clark Expedition, Davy Crockett, Underground Railroad, Harriet Tubman, Wild West, Abraham Lincoln, Robert E Lee, Martin Luther King Jr., Thomas Alva Edison, Ellis Island, World War 1, Susan B Anthony, Pearl Harbor, Franklin Delano Roosevelt, Rosa Parks, Neil Armstrong, Twin Towers, US Constitution, Theodore Roosevelt