http://www.anthonyforest.com/stockglulam.shtml

http://www.ebuild.com/gateway/engineered-wood-laminated-beams.hwx

http://www.boozerbeam.com/

http://www.usglulam.com/

http://www.anthonyforest.com/powerbeam.shtml

http://www.ilevel.com/roofs/r_MicrollamLVL_beams.aspx

http://www.fao.org/docrep/59708e/59708e05.htm

http://www.rigidply.com/glulam/beams.htm

http://www.timber-technologies.com/

http://www.spsconstruction.com/glulam.html

http://www.reedconstructiondata.com/documents/FS/specdata/061800_10028177_01_SD_21481.pdf