Industry Associations and Grading Agencies:

American Plywood Association (APA)
Canadian Wood Council
Lumbermen's Association of Texas (LAT)
National Lumber Grades Authority (NLGA)
North American Wood & Lumber Association (NAWLA)
Northeastern Lumber Manufacturers Association (NeLMA)
Southern Forest Products Association (SFPA)
Southeastern Lumber Manufacturers Association (SLMA)
Wood Moulding & Millwork Producers Association
West Coast Lumber Inspection Bureau (WCLIB)
Western Wood Products Association (WWPA)

Industry Price Reporting:

Random Lengths
Crows

Other Links of Interest:

Temperate Forest Foundation
American Wood Preservers Institute
BuildNet
Chicago Mercantile Exchange
Forest City Trading Group
ForestNet
Forest Products Publications ForestWorld News
National Home Center News
Quebec Forest Industries Association
Southern Pine Council
Wood World