| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1912 |
|
Sky Island | Reilly & Britton | Novel | |
| 1970 |
|
Sky Island | Reilly & Lee | Novel | |
| 1989 |
|
Sky Island | Books of Wonder | Novel | |
| 1989 | Sky Island | Classic Books on Cassettes | Novel | ||
| April 1989 |
|
Sky Island | Books of Wonder | Novel | |
| December 1998 |
|
Sky Island | Books of Wonder | Novel | |
| November 2002 |
|
Sky Island | Dover Publications | Novel | |
| January 2005 |
|
Sky Island | IndyPublish.com | Novel | |
| December 2005 |
|
Sky Island | The Echo Library | Novel | |
| June 2006 |
|
Sky Island | LibriVox | Novel | |
| October 2011 |
|
The Sea Fairies & Sky Island | Flying Chipmunk Publishing | Omnibus | |
| March 2012 |
|
Sky Island | Project Gutenberg | Novel | |
| May 2012 |
|
Sky Island | Bottom of the Hill Publishing | Novel | |
| August 2012 |
|
Sky Island | Dover Publications | Novel | |
| October 2013 |
|
The Wizard of Oz: A Polychrome Omnibus | CreateSpace | Omnibus | |
| November 2013 |
|
Sky Island | LibriVox | Novel |