G.O. ยท Guay-Odell
| title | ISBN-13 | year of publication |
|---|---|---|
| 2011 Astronomical Calendar | 978-0-934546-59-1 | 2010 |
| Astronomical Calendar 2009 | 978-0-934546-54-6 | 2008 |
| Astronomical Calendar 2010 | 978-0-934546-56-0 | 2009 |
| Astronomical Calendar 2012 | 978-0-934546-61-4 | 2011 |
| Astronomical Companion by Guy Ottewell Paperback | 978-0-934546-60-7 | 2010 |