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- The case of the most ancient bone, John R. Erickson ; illustrations by Gerald L. Holmes
- The case of the twisted kitty, John R. Erickson ; illustrations by Gerald L. Holmes
- Drover's secret life, John R. Erickson ; illustrations by Gerald L. Holmes
- The case of the booby-trapped pickup, by John R. Erickson ; illustrations by Gerald L. Holmes
- The case of the coyote invasion, John R. Erickson ; illustrations by Gerald L. Holmes
- The case of the blazing sky, by John R. Erickson ; illustrations by Gerald L. Holmes
- The quest for the Great White Quail, John R. Erickson ; illustrations by Gerald L. Holmes
- The big question, John R. Erickson ; illustrations by Gerald L. Holmes
- The case of the secret weapon, John R. Erickson ; illustrations by Gerald L. Holmes
- The case of the falling sky, John Erickson ; illustrated by Gerald Holmes
- The case of the prowling bear, John R. Erickson, illustrations by Gerald L. Holmes
- The case of the Halloween ghost, John R. Erickson ; illustrations by Gerald L. Holmes
- The Ghost of Rabbits Past, John R. Erickson
- The dungeon of doom, John R. Erickson ; illustrations by Gerald L. Holmes
- The case of the tricky trap, John R. Erickson ; illustrations by Gerald L. Holmes
- The case of the dinosaur birds, John R. Erickson ; illustrations by Gerald L. Holmes
- The case of the monkey burgler, John R. Erickson ; illustrated by Gerald L. Holmes
- The case of the mysterious voice, John R. Erickson ; illustrations by Gerald L. Holmes
- The case of the perfect dog, John R. Erickson ; illustrations by Gerald L. Holmes