Tracklist
| 1 | The Mysterious Ninth World | 5:00 |
| 2 | Special Delivery - By Guided Missile | 18:16 |
| 3 | The Valley Of Stolen Sunlight | 17:04 |
| 4 | The Secret Of A-G 17 | 15:38 |
| 5 | The Hidden Skyport | 23:02 |
| 6 | Up The Rope Of Space | 13:28 |
| 7 | Sunward Ho! | 17:33 |
| 8 | Hot Spot On Mercury | 18:41 |
| 9 | The Veil Of Venus | 13:47 |
| 10 | The Ocean Primeval | 13:19 |
| 11 | The Dying Planet | 15:20 |
| 12 | Martians Don't Care | 16:47 |
| 13 | At Rope's End | 17:12 |
| 14 | The Pole Of Callisto | 14:46 |
| 15 | Rockets Away! | 14:47 |
| 16 | Ice Cold On Oberon | 12:36 |
| 17 | In Orbit Around Pluto | 13:17 |
| 18 | Stronghold Of The Lost Planet | 23:26 |
| 19 | Sacrifice On The Sacred Moon | 17:05 |
| 20 | The Museum Of Galactic Life | 21:46 |
Credits
- Coordinator [Meta-/ Cataloging] – Barry Eads
- Cover, Artwork [Image] – David A. Aguilar
- Cover, Design – Yagan
- Liner Notes [Summary By] – Richard Kilmer
- Read By – Richard Kilmer
- Supervised By [Dedicated Proof-listener] – mim@can
Notes
Science-fiction novel, read in English language.Total running time: 5:22:50
Recording of a public-domain text
Creative Commons license: Public Domain Mark 1.0
Other versions
| Category | Artist | Title (Format) | Label | Category | Country | Year |
|---|---|---|---|---|---|---|
| 1206 | Donald Wollheim | The Secret Of The Ninth Planet (20xFile, MP3, Mono, 128) | LibriVox | 1206 | US | 2012 |
| none | Donald Wollheim | The Secret Of The Ninth Planet (File, AAC, Mono, 64 ) | LibriVox | none | US | 2012 |
| 1206 | Donald Wollheim | The Secret Of The Ninth Planet (20xFile, MP3, Mono, 64 ) | LibriVox | 1206 | US | 2012 |
