| The Lumberjacks | May 15, 2007 |
| The Legacy of John Waldie and Sons | September 30, 2007 |
| The Lumberjacks | June 15, 2002 |
| The Last Stand | May 31, 2007 |
| Weeds of the Woods | January 1, 1992 |
| Tree Mycoplasmas and Mycoplasma Diseases | January 1, 1988 |
| At The Cutting Edge | April 15, 2005 |
| Encyclopedia of North American Trees | April 23, 2002 |
| The Tree Doctor | April 1, 2003 |
| Encyclopedia of Trees | April 16, 2002 |
| Listening to Trees | September 15, 2008 |
| The Lumberjacks | May 15, 2007 |
| Canadian Forest Policy | December 29, 2001 |
| Canadian Forest Policy | December 29, 2001 |
| Cut and Run | August 27, 1983 |
| Northern California Nature Guide | April 14, 2008 |
| Washington and Oregon Nature Guide | April 14, 2008 |
| Trees and Shrubs of Alberta | March 1, 2010 |
| Tree and Shrub Gardening for Alberta | February 5, 2009 |
| Tree and Shrub Gardening for Minnesota and Wisconsin | April 27, 2005 |
Sponsored Collection
