| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1976 | 978-0-934419-00-0 | Elisabeth Howard · Howard Austin | Born to Sing |
| 2006 | 978-0-934419-02-4 | Elisabeth Howard | The ABCs of Vocal Harmony: Book & 4 CDs |
| '' | 978-0-934419-19-2 | '' | Sing!: Book, 4 CDs & DVD |
| 1985 | 978-0-934419-34-5 | Howard Austin Schulsinger · Elisabeth Howard | Born to Sing, Beginners to Advanced High and Low Voice (4 CDs + Book) |
| 1999 | 978-0-934419-35-2 | Howard Austin · Elisabeth Howard | ABCs of Vocal Harmony, Singing Lessons, Sight-Singing, Ear-Training, Singing Harmony (4 CDs + Book) (Born to sing) |