| The Three Investigators The mystery of the Green Ghost |
| The Three Investigators The Mystery of the Magic Circle |
| Three Investigators Mystery of the Creep-Show Crooks HC |
| Three Investigators Mystery of The Vanishing Treasure |
| The Gold Dust Letters Investigators of the Unknown, Bo |
| THREE INVESTIGATORS The MYSTERY of the BLAZING CLIFFS |
| The Three Investigators in the Mystery of the Coughi.** |
| Three Investigators - The Secret of Terror castle |
| The Three Investigators - The Mystery of the Fiery Eye |
| 3 INVESTIGATORS - MYSTERY OF THE SILVER SPIDER - 1ST ED |
| Three Investigators Mystery of the Vanishing Treasure |
| Three Investigators Mystery of the Singing Serpent |
| Three Investigators Mystery of the Dancing Devil HC |
| Three Investigators Mystery of the MIssing Mermaid 1983 |
| Three Investigators - THE SECRET OF TERROR CASTLE |
| THREE INVESTIGATORS #21 SECRET OF THE HAUNTED MIRROR HC |
| Three Investigators Mystery of the Green Ghost, HC 1965 |
| THREE INVESTIGATORS #25 MYSTERY OF THE DANCING DEVIL HC |
| THREE INVESTIGATORS - MYSTERY OF THE GREEN GHOST [PB] |
| The 3 Investigators The Mystery of the Blazing Cliffs |
| 3 Investigators in the Mystery of the Shrinking House |
| Three 3 Investigators MYSTERY OF THE MISSING MERMAID |
| Alfred Hitchcock and the Three Investigators in the ... |
| Three Investigators #23 - The Invisible Dog - 1984 PB |
| Three Investigators #26 - The Headless Horse - 1985 PB |
| Three Investigators Mystery of the Green Ghost, HC 1965 |