| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2008 | 978-0-934546-54-6 | Guy Ottewell | Astronomical Calendar 2009 |
| 2009 | 978-0-934546-56-0 | '' | Astronomical Calendar 2010 |
| 2010 | 978-0-934546-59-1 | '' | 2011 Astronomical Calendar |
| '' | 978-0-934546-60-7 | '' | Astronomical Companion by Guy Ottewell (2010) Paperback |
| 2011 | 978-0-934546-61-4 | '' | Astronomical Calendar 2012 |