Research Links for Aromatic Plants-Cedar, Western Red (Thuja plicata)
Images of Western Red Cedar
Wikipedia
Gymnosperm Databas
AltMD
The essential guide to herbal safety By Simon Mills, Kerry Bone
Montana--native plants and early peoples By Jeff Hart, Jacqueline Moore
http://www.tryonfarm.org/share/node/390
HerbMed
Washington Native Plant Society
Plants for a future
Native Plants of the Northwest