Canadian Institute of Treated Wood
http://www.citw.org/
CITW serves as a forum for those involved with the wood preservation industry, from research to production, marketing and protection of the environment.

Creative Backyards
http://www.creativebackyards.com/
A general information website with project plans for decks, fences, gazebos, landscaping and others.

Timber Specialties
http://www.timberspecialties.com/
A leader in the research and development of new products and services in all areas of wood preservation technology.

Naturewood
http://www.osmose.com/wood/usa/preserved/naturewood/product/
NatureWood preserved wood product is offered as an alternative to traditional CCA pressure treated wood. NatureWood preserved wood products provide retailers, treaters, consumers, builders and architects with an option in their selection of pressure treated wood products.