| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2000 | 978-0-9538714-0-7 | Harry Cowling | The Word Wasp: A Manual for Teaching the Rules and Structures of Spelling |
| 2002 | 978-0-9538714-2-1 | Harry Cowling · Marie Cowling | The Hornet Literacy Primer |
| 2001 | 978-0-9538714-3-8 | '' | The Word Wasp: For Teachers and Parents |