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- A thief at the National Zoo, by Ron Roy ; illustrated by Timothy Bush
- Roy, Ron, Capital mysteries, 7
- The bald bandit, by Ron Roy ; illustrated by John Gurney Steven
- The school skeleton, by Ron Roy ; illustrated by John Steven Gurney
- Roy, Ron, Capital mysteries, 5
- Roy, Ron, Capital mysteries, 9
- The quicksand question, by Ron Roy ; illustrated by John Steven Gurney
- July jitters, by Ron Roy ; illustrated by John Steven Gurney
- The unwilling umpire, by Ron Roy ; illustrated by John Steven Gurney
- September sneakers, by Ron Roy ; illustrated by John Steven Gurney
- Trouble at the Treasury, by Ron Roy ; illustrated by Timothy Bush
- The zombie zone, by Ron Roy ; illustrated by John Steven Gurney
- The goose's gold, an A to Z mystery, by Ron Roy ; illustrated by John Steven Gurney
- The kidnapped king, by Ron Roy ; illustrated by John Steven Gurney
- The skeleton in the Smithsonian, by Ron Roy ; illustrated by Timothy Bush
- A spy in the White House, by Ron Roy ; illustrated by Timothy Bush
- April adventure, by Ron Roy ; illustrated by John Steven Gurney
- Mystery at the Washington Monument, by Ron Roy ; illustrated by Timothy Bush
- Roy, Ron, A to Z mysteries
- Roy, Ron, Capital mysteries, #3
- The empty envelope, by Ron Roy ; illustrated by John Steven Gurney
- The vampire's vacation, by Ron Roy ; illustrated by John Steven Gurney
- March mischief, by Ron Roy ; illustrated by John Steven Gurney
- Roy, Ron, Capital mysteries, 8
- The ninth nugget, by Ron Roy ; illustrated by John Steven Gurney
- Who cloned the President?, by Ron Roy ; illustrated by Liza Woodruff
- The falcon's feathers, by Ron Roy ; illustrated by John Steven Gurney
- February friend, by Ron Roy ; illustrated by John Steven Gurney
- October ogre, by Ron Roy ; illustrated by John Steven Gurney
- The absent author, by Ron Roy ; illustrated by John Gurney
- The yellow yacht, by Ron Roy ; illustrated by John Steven Gurney
- The orange outlaw, by Ron Roy ; illustrated by John Steven Gurney
- The invisible island, by Ron Roy ; illustrated by John Steven Gurney
- Who broke Lincoln's thumb?, by Ron Roy ; illustrated by Timothy Bush
- The missing mummy, by Ron Roy ; illustrated by John Steven Gurney
- May magic, by Ron Roy ; illustrated by John Steven Gurney
- Roy, Ron, Capital mysteries, #1
- The x'ed-out x-ray, by Ron Roy ; illustrated by John Steven Gurney
- January joker, by Ron Roy ; illustrated by John Steven Gurney
- Roy, Ron, Calendar mysteries, 9
- Roy, Ron, Capital mysteries, #4
- The deadly dungeon, by Ron Roy ; illustrated by John Steven Gurney
- The talking T. Rex, by Ron Roy ; illustrated by John Steven Gurney
- The canary caper, by Ron Roy ; illustrated by John Steven Gurney
- The haunted hotel, by Ron Roy ; illustrated by John Steven Gurney
- The jaguar's jewel, by Ron Roy ; illustrated by John Steven Gurney