These national, state and local organizations address historic preservation topics or can provide information on historic buildings

Lancaster:

City of Lancaster: www.cityoflancasterpa.com

Historic Preservation Trust of Lancaster County: www.hptrust.org

Lancaster County Historical Society: www.lancasterhistory.org

Lancaster County Planning Commission, Heritage Planning Division: www.co.lancaster.pa.us/planning

Pennsylvania:

Pennsylvania Historical & Museum Commission: www.phmc.state.pa.us

ARCH: www.arch.state.pa.us (PHMC's on-line listing of all Pennsylvania properties listed on the National Register of Historic Places)

Preservation Pennsylvania: www.preservationpa.org

National Resources:

National Park Service, Heritage Preservation Services: www.cr.nps.gov/architecture.htm

National Park Service, Teaching with Historic Places: www.cr.nps.gov/nr/twhp

National Trust for Historic Preservation: www.nationaltrust.org