Wood

A little help with wood materials:

• American Forest Foundation (AFF)
• American Forest and Paper Association (AFPA)
• American Institute of Timber Construction (AITC)
• American Plywood Association (APA)
• American Wood Council (AWC)
• Engineered Wood Association (EWA)
• Structural Board Association (SBA)
• Truss Plate Institute (TPI) -- no known web site
• Western Wood Products Association (WWPA)