REA/RUS specifications for wood crossarms (solid and laminated) transmission timbers and pole keys

http://www.usda.gov/rus/electric/pubs/a/1728h701.pdf tp://www.eei.org/industry_issues/energy_infrastructure/distribution/UndergroundReport.pdf

http://www.eei.org/industry_issues/energy_infrastructure/distribution/UndergroundReport.pdf

American Wood Preservers Institute
www.preservedwood.com

J.H. Baxter Wood Preserving
www.jhbaxter.com

Western Wood Preservers Institute
www.wwpinstitute.org

Rural Utilities Service
www.usda.gov/rus

Forest Information
www.forestinformation.com

Forest Products Laboratory
www.fpl.fs.fed.us