Amber Lotus · Amber Lotus Publishing · Hampton Roads Publishing Company
| title | ISBN-13 | year of publica- tion |
|---|---|---|
| Crop Circles 2005 Calendar | 978-1-56937-396-5 | 2004 |
| Crop Circles 2006 Wall Calendar | 978-1-56937-619-5 | 2005 |
| Crop Circles 2008 Calendar | 978-1-56937-921-9 | 2007 |
| Crop Circles 2009 Wall Calendar | 978-1-60237-061-6 | 2008 |
| Crop Circles | 978-1-56937-762-8 | 2006 |
| Secrets in the Fields: The Science and Mysticism of Crop Circles | 978-1-57174-322-0 | 2002 |