Free information on historic timber frame trusses and other timber framing resources.
http://www.tfguild.org/index.html Timber Framers Guild
Info on what is in manual below. http://www.fpl.fs.fed.us/documnts/fplgtr/fplgtr113/fplgtr113.htm
14 MB PDF 486 page Wood Handbook http://www.fpl.fs.fed.us/documnts/fplgtr/fplgtr113/fplgtr113.pdf