Historic American Buildings Survey (HABS)
http://www.cr.nps.gov/habshaer/

The Institute of Classical Architecture & Classical America
http://www.classicist.org

Traditional Building Magazine
http://www.traditional-building.com

National Trust for Historic Preservation
http://www.nationaltrust.org

AIA Philadelphia
http://www.aiaphila.org

Albany Township Historical Society
http://www.albanyths.org