Timber Framers Guild:
www.tfguild.org
Ontario Straw Bale Building Coalition:
www.strawbalebuilding.ca
Association of Architectural Technologists of Ontario:
www.aato.on.ca
Healthiest Home and Building Supplies:
www.thehealthiesthome.com
Fox Maple School of Traditional Building:
www.foxmaple.com
Gibson Timber Frames:
www.gibsontimberframes.com
Heartwood School for the Homebuilding Crafts:
www.heartwoodschool.com
Yestermorrow Design/Build School:
www.yestermorrow.org