| Who was Henry Ford? | Burgan, Michael | Who Was? | Fourth Grade, |
| Who was Isaac Newton? | Pascal, Janet | Who Was? | Sixth Grade, |
| Who was Isaac Newton? | Pascal, Janet B. | Who Was? | Fourth Grade, |
| Who Was Jackie Robinson? | Herman, Gail & Ostrum | Who Was? | Fourth Grade, |
| Who was Jacques Cousteau? | Medina, Nico | Who Was? | Fourth Grade, |
| Who Was Jesse Owens? | Buckley, James | Who was? | Fourth Grade, |
| Who was Jim Henson? | Holub, Joan | Who Was? | Fourth Grade, |
| Who was Joan of Arc? | Pollack, Pam | Who Was? | Fourth Grade, |
| Who was John F. Kennedy? | McDonough, Yona Zeldis | Who Was? | Fourth Grade, |
| Who was Johnny Appleseed? | Holub, Joan | Who Was? | Fourth Grade, |
| Who was Julius Caesar? | Medina, Nico | Who Was? | Fourth Grade, |
| Who was King Tut? | Edwards, Roberta | Who Was? | Fourth Grade, |
| Who Was Laura Ingalls Wilder? | Demuth, Patricia | Who Was? | Fourth Grade, |
| Who Was Leonardo da Vinci? | Edwards, Roberta | Who Was? | Fifth Grade, |
| Who was Leonardo da Vinci? | Edwards, Roberta | Who Was? | Fourth Grade, |
| Who was Louis Armstrong? | McDonough, Yona Zeldis | Who Was? | Fourth Grade, |
| Who was Louis Braille? | Frith, Margaret | Who Was? | Fourth Grade, |
| Who Was Marco Polo? | Holub, Joan | Who Was? | Fourth Grade, |
| Who was Marie Antoinette? | Rau, Dana Meachen | Who Was? | Fourth Grade, |
| Who Was Marie Curie? | Stine, Megan | Who Was? | Sixth Grade, |
| Who Was Mark Twain? | Prince, April Jones | Who Was? | Fourth Grade, |
| Who was Martin Luther King, Jr.? | Bader, Bonnie | Who Was? | Fourth Grade, |
| Who was Milton Hershey? | Buckley, James, Jr. | Who Was? | Fourth Grade, |
| Who was Nelson Mandela? | Pollack, Pam | Who Was? | Fourth Grade, |
| Who was Pablo Picasso? | Kelley, True | Who Was? | Fourth Grade, |
| Who was Paul Revere? | Edwards, Roberta. | Who Was? | Fourth Grade, |
| Who Was Queen Elizabeth? | Eding, June | Who Was? | Fifth Grade, |
| Who was Queen Victoria? | Gigliotti, Jim | Who Was? | Fourth Grade, |
| Who was Rachel Carson? | Fabiny, Sarah | Who Was? | Fourth Grade, |
| Who was Roald Dahl? | Kelley, True | Who Was? | Fourth Grade, |
| Who was Robert E. Lee? | Bader, Bonnie | Who Was? | Fourth Grade, |
| Who was Roberto Clemente? | Buckley, James, Jr. | Who Was? | Fourth Grade, |
| Who was Ronald Reagan? | Milton, Joyce | Who Was? | Fourth Grade, |
| Who was Rosa Parks? | McDonough, Yona Zeldis | Who Was? | Fourth Grade, |
| Who was Sacagawea? | Fradin, Dennis B. | Who Was? | Fourth Grade, |
| Who was Sally Ride? | Stine, Megan | Who Was? | Fourth Grade, |
| Who Was Seabiscuit? | Buckley, James, Jr. | Who Was? | Fourth Grade, |
| Who was Sitting Bull? | Spinner, Stephanie | Who Was? | Fourth Grade, |
| Who was Sojourner Truth? | McDonough, Yona Zeldis | Who Was? | Fourth Grade, |
| Who was Steve Jobs? | Pollack, Pam | Who Was? | Fourth Grade, |
| Who was Susan B. Anthony? | Pollack, Pam | Who Was? | Fourth Grade, |
| Who was Theodore Roosevelt? | Burgan, Michael | Who Was? | Fourth Grade, |
| Who was Thomas Alva Edison? | Frith, Margaret | Who Was? | Fourth Grade, |
| Who Was Thomas Jefferson? | Fradin, Dennis B. | Who Was? | Fourth Grade, |
| Who was Ulysses S. Grant? | Stine, Megan | Who Was? | Fourth Grade, |
| Who was Walt Disney? | Stewart, Whitney | Who Was? | Fourth Grade, |
| Who Was William Shakespeare? | Mannis, Celeste Davison | Who Was? | Fourth Grade, |
| Who Was Wolfgang Amadeus Mozart? | McDonough, Yona Zeldis | Who Was? | Fourth Grade, |
| Who Were the Brothers Grimm? | Reed, Avery | Who Was? | Fourth Grade, |
| Who Were the Tuskegee Airmen? | Smith, Sherri L. | Who was? | Fourth Grade, |
| Who’s in Love with Arthur #10 | Brown, Krensky & | Arthur Chapter Book | Third Grade, |
| Who’s That Stepping on Plymouth Rock? | Fritz, Jean | | Fourth Grade, |
| Whoever You Are | Fox, Mem | | Kindergarten, |
| Whoosh!: Lonnie Johnson’s Super-Soaking Stream of Inventions | Barton, Chris | | Third Grade, |
| Whose Mouse Are You? | Kraus, Robert | | Kindergarten, |
| Why Do Cats Meow? | Holub, Joan | | Third Grade, |
| Why Do Dogs Bark? | Holub, Joan | | Third Grade, |
| Why Do Leaves Change Color? | Maestro, Betsy | Let's-Read-and-Find-Out Science; Stage 2 | Second Grade, |
| Why Do Snakes Hiss? : And Other Questions About Snakes, Lizards, and Turtles | Holub, Joan | | Third Grade, |
| Why Don’t Haircuts Hurt? | Berger, Melvin and Gilda | | Third Grade, |
| Why Don’t You Get a Horse Sam Adams? | Fritz, Jean | | Fourth Grade, |
| Why Mosquitoes Buzz in People’s Ears | Aardema, Verna | | Second Grade, |
| Why Not?: Over 1,111 Answers to Everything | Boyer, Crispin | National Geographic Kids | Fifth Grade, |
| Why Oh Why Are Deserts Dry!: All About Deserts | Rabe, Tish | Cat in the Hat Learning Library, The | First Grade, |
| Why?: Over 1,111 Answers to Everything | Boyer, Crispin | National Geographic Kids | Sixth Grade, |
| Why’d They Wear That?: Fashion as the Mirror of History | Albee, Sarah | | Secondary, |
| Wide Window, The | Snicket, Lemony | Series of Unfortunate Events; 3 | Fifth Grade, |
| Wide-Awake Princess, The | Baker, E.D. | Wide-Awake Princess, The; 1 | Secondary, |
| Widow’s Broom, The | Van Allsburg, Chris | | Second Grade, |
| Wiggling Worms at Work | Pfeffer, Wendy | Let's-Read-and-Find-Out Science; Stage 2 | First Grade, |
| Wilbur and Orville Wright: Young Fliers | Stevenson, Augusta | Childhood of Famous Americans | Third Grade, |
| Wild About Us! | Beaumont, Karen | | Kindergarten, |
| Wild and Woolly Mammoths | Aliki, | | First Grade, |
| Wild Baby Animals | Lock, Deborah | DK Readers Level 2 | Second Grade, |
| Wild Born | Mull, Brandon | Spirit Animals (original); 1 | Fifth Grade, |
| Wild Robot Escapes, The | Brown, Peter | Wild Robot; 2 | Fourth Grade, |
| Wild Robot, The | Brown, Peter | Wild Robot; 1 | Fourth Grade, |
| Wild Weather | Callery, Sean | Magic School Bus Presents (Nonfiction Companion to The Magic School Bus Inside a Hurricane) | Third Grade, |
| Wild West, The: Secrets, Strange Tales, and Hidden Facts about the Wild West | Bearce, Stephanie | Top Secret Files | Fifth Grade, |
| Wild, Wild Wolves | Milton, Joyce | | Second Grade, |
| Wildest Race Ever, The: The Story of the 1904 Olympic Marathon | McCarthy, Meghan | | Third Grade, |
| Wildfire Run | Garretson, Dee | | Fifth Grade, |
| Wilfrid Gordon McDonald Partridge | Fox, Mem | | Second Grade, |
| Will You Sign Here, John Hancock? | Fritz, Jean | | Fourth Grade, |
| Will’s Words: How William Shakespeare Changed the Way You Talk | Sutcliffe, Jane | | Fifth Grade, |
| William Hoy Story, The: How a Deaf Baseball Player Changed the Game | Churnin, Nancy | | Second Grade, |
| William Shakespeare and the Globe | Aliki, | | Fifth Grade, |
| William’s Doll | Zolotow, Charlotte | | First Grade, |
| Willie McLean and the Civil War Surrender | Ransom, Candice F. | On My Own History | Second Grade, |
| Willow Moss & the Lost Day | Valente, Dominique | Starfell; 1 | Fourth Grade, |
| Willow Moss and the Forgotten Tale | Valente, Dominique | Starfell; 2 | Fourth Grade, |
| Wilma Rudolph | Biracree, Tom | American Women of Achievement | Secondary, |
| Wilma Rudolph: Olympic Runner | Harper, Jo | Childhood of Famous Americans | Third Grade, |
| Wilma Unlimited: How Wilma Rudolph Became the World’s Fastest Woman | Krull, Kathleen | | Third Grade, |
| Wind in the Door, A | L'Engle, Madeleine | Time Quintet; 2 | Sixth Grade, |
| Wind in the Willows, The | Grahame, Kenneth | | Secondary, |
| Wings of Merlin, The | Barron, T.A. | Lost Years of Merlin; 5 | Secondary, |
| Wings on Things | Brown, Marc | | First Grade, |
| Wingsnatchers, The | Horwitz, Sarah Jean | Carmer and Grit; 1 | Sixth Grade, |
| Winnie: The True Story of the Bear Who Inspired Winnie-the-Pooh | Walker, Sally M. | | Second Grade, |