Timothy Bush
- Christmas Cricket
- Turkey Trouble on the National Mall
- The Ghost at Camp David
- The Secret at Jefferson's Mansion
- The Election-Day Disaster
- Trapped on the D.C. Train!
- A Thief at the National Zoo
- Mystery at the Washington Monument
- Trouble at the Treasury
- Fireworks at the FBI
- The Skeleton in the Smithsonian
- Who Broke Lincoln's Thumb?
- Teddy Bear, Teddy Bear
- Benjamin McFadden and the Robot Babysitter