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Preservation & Restoration
O-P
Oberlin
Heritage Center/O.H.I.O.
O’Connell and Associates, Preservation
consultant
Ohio Preservation
Society
Ohio State Historic Preservation Office
(SHPO)
Oklahoma
State Historic Preservation Office (SHPO)
Open Directory Project – Historic
Preservation
Oregon State Historic Preservation Office
(SHPO)
Palmetto Conservation
Foundation, The,
(SC)
Palmetto
Trust for Historic Preservation
(SC)
Panamerican Consultants, Inc.,
Architectural
historians
Park City
Historical Society and Museum
(UT)
Paula S.
Reed, Architectural historian, cultural resource
evaluations
Pennsylvania
Downtown Center
Pennsylvania
State Historic Preservation Office (SHPO)
Pittsburgh History
& Landmarks Foundation
(PA)
Preservation
Action,
Grassroots advocate for historic
preservation in Washington,
D.C.
Preservation
Action Council of San Jose (CA)
Preservation Alliance for Greater
Philadelphia
(PA)
Preservation Alliance of
Minnesota
Preservation Alliance of
Virginia
Preservation Alliance
of West
Virginia
Preservation Coalition of Erie County
(NY)
Preservation Dallas
(TX)
Preservation Delaware, Inc.
Preservation Idaho
Preservation
Kentucky
Preservation League of New York
State
Preservation
Maryland
PreservatiON
MASS
Preservation New
Jersey
Preservation North
Carolina
Preservation Oklahoma,
Inc.
Preservation Pennsylvania
Preservation
Resource Center of New Orleans
(LA)
Preservation Society of Charleston, The
(SC)
Preservation Texas, Inc.
Preservation Trades
Network,
Inc.
Preservation Trust of Vermont
Preservation Wayne
(MI)
Preservation
Web
Preservation Worcester
(MA)
preserveALA.org (ALA)
Preserve and Protect, Promotion of historical and
environmental protection
organizations
Preserve Rhode
Island
Preserve South
Dakota
Providence
Preservation
Society
Public Archaeology
Laboratory, Architectural historians, historical
research, preservation consulting and
planning
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