APA The Engineered Wood Association
Associated Builders and Contractors
Association of Energy Conservation Professionals
American Wood Preservers Institute
Blue Linx Company
Calculators
Canadian Wood Council
Do It Yourself
Deck Designer
Earth Craft House, Virginia
Engineered Wood Association
Fine Homebuilding Magazine
Georgia-Pacific (Engineered Lumber Products)
Green Building
Insulation Contractors Association of America
Hardwood Plywood and Veneer Association
Insulation Contractors Association of America
Journal of Light Construction
Material Safety Data Sheets
National Association of Home Builders
National Association of Remodeling Industry
National Paint and Coatings Association
OSHA
Southern Pine Council
Span Calculations
U.S. Census Bureau (VA Construction Statistics)
U.S. Dept. of Housing and Urban Development
U.S. Green Building Council
Western Wood Products Association
Wood Moulding & Millwork Producers Association