| # | Book Title | Author | |
|---|---|---|---|
| What are the Summer Olympics? | Herman, Gail | ||
| What is the Civil Rights Movement? | Smith, Sherri L. | ||
| What is the Constitution? | Demuth, Patricia | ||
| What is the Declaration of Independence? | Harris, Michael | ||
| What is the Panama Canal? | Pascal, Janet B. | ||
| What is the Statue of Liberty? | Holub, Joan | ||
| What is the Super Bowl? | Anastasio, Dina | ||
| What is the World Series? | Herman, Gail | ||
| What Was D-Day? | Demuth, Patricia | ||
| What Was Ellis Island? | Demuth, Patricia | ||
| What Was Hurricane Katrina? | Koontz, Robin Michal | ||
| What Was Pearl Harbor? | Demuth, Patricia | ||
| What Was Pompeii? | O'Connor, Jim | ||
| What Was Stonewall? | Medina, Nico | ||
| What Was the Age of the Dinosaurs? | Stine, Megan | ||
| What Was the Alamo? | Pollack, Pam | ||
| What Was the Battle of Gettysburg? | O'Connor, Jim | ||
| What Was the Berlin Wall? | Medina, Nico | ||
| What Was the Bombing of Hiroshima? | Brallier, Jess M. | ||
| What Was the Boston Tea Party? | Krull, Kathleen | ||
| What Was the First Thanksgiving? | Holub, Joan | ||
| What Was the Gold Rush? | Holub, Joan | ||
| What Was the Great Chicago Fire? | Pascal, Janet B. | ||
| What Was the Great Depression? | Pascal, Janet B. | ||
| What Was the Hindenburg? | Pascal, Janet B. | ||
| What Was the Holocaust? | Herman, Gail | ||
| What Was the Lewis and Clark Expedition? | St. George, Judith | ||
| What Was the March on Washington? | Krull, Kathleen | ||
| What Was the San Francisco Earthquake? | Hoobler, Dorothy | ||
| What Was the Titanic? | Sabol, Stephanie | ||
| What Was the Underground Railroad? | McDonough, Yona Zeldis | ||
| What Was the Vietnam War? | O'Connor, Jim | ||
| What Was the Wild West? | Pascal, Janet B. | ||
| What Was Woodstock? | Holub, Joan | ||
| What Were the Negro Leagues? | Johnson, Varian | ||
| What Were the Salem Witch Trials? | Holub, Joan | ||
| What Were the Twin Towers? | O'Connor, Jim | ||
| Where is the White House? | Stine, Megan |