DMOZ

Open Directory

The Open Directory is a searchable website directory providing information on services, materials, suppliers, contractors, trades, architects, engineers, educators and associations related to historic preservation. "The Open Directory was founded in the spirit of the Open Source movement, and is the only major directory that is 100% free. There is not, nor will there ever be, a cost to submit a site to the directory, and/or to use the directory's data. The Open Directory data is made available for free to anyone who agrees to comply with our free use license. " (from website)

Web Address	http://dmoz.org/Business/Industries/Construction_and_Maintenance/Historic_Preservation/
Searchable	Yes
Categories	General
Website Languages	English

Comments

Has sections for art:architecture:preservation as well as materials and supplies