- Stay curious!, a brief history of Stephen Hawking, by Kathleen Krull and Paul Brewer ; illustrated by Boris Kulikov
- Walking toward peace, the true story of a brave woman called Peace Pilgrim, Kathleen Krull ; illustrated by Annie Bowler
- The brothers Kennedy, John, Robert, Edward, Kathleen Krull ; illustrated by Amy June Bates
- The boy who invented TV, the story of Philo Farnsworth, by Kathleen Krull
- What was the March on Washington?, by Kathleen Krull ; illustrated by Tim Tomkinson
- Starstruck, the cosmic journey of Neil deGrasse Tyson, by Kathleen Krull and Paul Brewer ; illustrated by Frank Morrison
- The only woman in the photo, Frances Perkins & her New Deal for America, Kathleen Krull ; illustrated by Alexandra Bye
- Fartiste, Kathleen Krull and Paul Brewer ; illustrated by Boris Kulikov
- No truth without Ruth, the life of Ruth Bader Ginsburg, by Kathleen Krull ; illustrated by Nancy Zhang
- Leonardo da Vinci, by Kathleen Krull ; illustrated by Boris Kulikov
- Albert Einstein, by Kathleen Krull ; illustrated by Boris Kulikov
- What was the Boston Tea Party?, by Kathleen Krull ; illustrated by Lauren Mortimer
- Wilma unlimited, how Wilma Rudolph became the world's fastest woman, Kathleen Krull ; illustrated by David Diaz
- Kubla Khan, emperor of everything, by Kathleen Krull ; illustrated by Robert Byrd
- Isaac Newton, by Kathleen Krull ; [Boris Kulikov, illustrator]
- The road to Oz, twists, turns, bumps, and triumphs in the life of L. Frank Baum, by Kathleen Krull ; illustrated by Kevin Hawkes
- The Beatles were fab (and they were funny), by Kathleen Krull and Paul Brewer ; illustrated by Stacy Innerst
- Krull, Kathleen, Giants of science