| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2000 | 978-0-9632339-3-6 | Thomas Appell | Can You Sing a High 'C' Without Straining? |
| 2005 | 978-0-9632339-4-3 | '' | Never Get Another Cold |
| 2004 | 978-0-9632339-6-7 | Thomas Appell~Randy Jennings | Johnnie Truth and the Stolen Statue: Illustrated Book on DVD |
| 2007 | 978-0-9632339-7-4 | Thomas Appell | Can You Sing High C Without Straining? 4th Edition |