| # | Book Title | Author | ||
|---|---|---|---|---|
| 1 | Steps Up the Chimney, The | Corlett, William | ||
| 2 | Door in the Tree, The | Corlett, William | ||
| 3 | Tunnel Behind the Waterfall, The | Corlett, William | ||
| 4 | Bridge in the Clouds, The | Corlett, William |
Juvenile Series and Sequels
| # | Book Title | Author | ||
|---|---|---|---|---|
| 1 | Steps Up the Chimney, The | Corlett, William | ||
| 2 | Door in the Tree, The | Corlett, William | ||
| 3 | Tunnel Behind the Waterfall, The | Corlett, William | ||
| 4 | Bridge in the Clouds, The | Corlett, William |