Universal Timber Structures, Inc.
National timber specialist in heavy timber and glulam structure design, engineering, fabrication and construction
http://www.utsdesign.com/

American Institute of Timber Construction
Representing the glued laminated timber industry since 1952, AITC provides technical support to manufacturers and design communities.
http://www.aitc-glulam.org/

Timber Restoration, Inc.
Timber Restoration, Inc., a New Jersey based contractor, specializes in state of the art repairs to structural wood framing systems, roof trusses, arches and domes, including glued laminated (glulam), mechanically laminated wood beams and solid-sawn wood beams. Epoxy injection repairs. Structural inspections, repairs, and erection of wood structures. Bowstring and other truss configurations, glued laminated wood arches and structural columns.
http://www.timberrestoration.com/

Timber Systems
Timber Systems, in Lapeer Michigan, has been designing, manufacturing and distributing wood structures since 1975.
http://www.timbersystems.com/

Unadilla Laminated Products
Manufacturers of long architectural laminated wood beams, timber bridges, structural gluelams, heavy trusses and custom lumber arches.
http://www.unalam.com/

Vermont Timber Works, Inc
Vermont Timber Works, Inc. is the expert in building beautiful timber frames for homes, churches, barns, commercial and residential projects. Our Craftsmen and women have engineered and manufactured buildings of all designs using the finest in timberframe construction. An original post and beam manufacturer located in New England who can help with any heavy timber framing construction project!
http://www.vermonttimberworks.com/

Timber Frame Services
Producer of trussed rafters and laminated beams. Based in Shropshire, England.
http://www.timberframe.co.uk/

Timber Solutions, L.L.C.
Complete service for all your post and beam construction needs. Timber Solutions can help you select a building site, custom design your timber frame and build to your specifications.
http://www.timbersllc.com

Earthwood Timber Frame Homes
Timber frame design and construction services throughout Oregon, Washington, and Idaho
http://www.earthwoodhomes.com

Timberfab
TimberFab, Inc. - Heavy Timber Frame and Truss Craftsmen
http://www.timberfab.net/