Non-profit membership organization dedicated to education, networking and outreach for the traditional building trades and allied disciplines. Includes information on trade shows and events.

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Structural engineers specialize in historic preservation, including large federal projects in the United States. Includes work on masonry, timber, and cast concrete structures.

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A private consulting and research firm practicing preservation design, conditions assessments, materials science, and historic building documentation. Projects are in the northeastern United States.

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A nationwide consulting service that selects historically appropriate color schemes for homes and commercial building exteriors.

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Strengthens existing fragile plaster in ceilings and walls in historic buildings.

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Stained glass consultants advice on stained glass conservation issues.

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A cultural heritage management firm in India specialising in the architectural conservation and management planning.

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Provides scientific analysis of historic finishes for the restoration of historic structures ranging from state capitol buildings to archaeological sites.

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A studio crafting hand-carved architectural works in wood and marble for residential, commercial and historical interiors. This firm based in Valencia, California, works across the US.

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Ambiente Risorse e Sviluppo (Environment, Resources and Development) is a consulting firm working all over the world.

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Provides documentation of historic barns and outbuildings in the U.S. that includes condition reports, historical narratives, physical descriptions, architectural documentation, historic site plans, and State and National Register nominations.

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Custom design contracting firm specializing in adaptive reuse of old barns into unique homes. Features portfolio, FAQs, news. Based in Carversville, PA.

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Provides scholarly research, lectures, tours, and instructional materials on modern art and architecture for organizations, film-makers, and museums.

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A women-owned research and consulting firm specializing in architectural history and historic preservation, based in Washington, DC.

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An Italian company based in Florence offering geophysical surveys for archaeology and civil engineering, monitoring of structure micro-shifts, databases, geographic information systems. Company profile, examples.

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Historic Preservation construction company offering services such as framing, plaster, window repair and interior finish work.

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Master carpenter specializing in historic preservation, including plaster, millwork, and timber frame repairs.

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Consulting engineers who specialise in the sensitive repair and conservation of historic buildings and structures. Portfolio includes projects throughout the United Kingdom.

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Bruce Induni offers consultancy in the UK on all aspects of historic stonework and mortar and teaches short courses on conservation. He describes his services, philosophy and experience.

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New England business specializing in historic preservation. Projects include historically-sensitive additions, historic barn restoration, and custom millwork and woodworking.

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