| title | ISBN-13 | year of publication |
|---|---|---|
| Weed: 420 Things You Didn't Know about Cannabis | 978-1-4405-0349-8 | 2009 |
| Weed 2012 Daily Calendar: 365 Things You Didn't Know about Cannabis | 978-1-4405-2715-9 | 2011 |
| Weed 2014 Daily Calendar: 365 More Things You Didn't Know about Cannabis | 978-1-4405-6499-4 | 2013 |
| Weed 2015 Daily Calendar | 978-1-4405-7936-3 | 2014 |
| Weed 2016 Daily Calendar: 365 Things You Didn't Know about Cannabis | 978-1-4405-8857-0 | 2015 |
| Weed 2017 Daily Calendar: 365 More Things You Didn't Know about Cannabis | 978-1-4405-9818-0 | 2016 |
| Weed 2018 Daily Calendar: 365 More Things You Didn't Know about Cannabis | 978-1-5072-0296-8 | 2017 |
| Weed 2019 Daily Calendar: 365 More Things You Didn't Know about Cannabis | 978-1-5072-0775-8 | 2018 |