|
American Society for Testing and Materials
<http://www.astm.org>
Connecticut Trust for Historic Preservation
<http://www.cttrust.org>
Florida Trust for Historic Preservation
<http://www.floridatrust.org>
Friends of Terra Cotta
<http://www.preserve.org/fotc>
Georgia Trust for Historic Preservation
<http://www.georgiatrust.org>
Historic Preservation Alliance of Wichita
and Sedgwick County
<http://members.cox.net/wichitahpa>
Historic Preservation League of Oregon
<http://www.hplo.org>
Historic Preservation Society of Durham
<http://www.preservationdurham.org>
Institute for Operations Research and
the Management Sciences
<http://www.informs.org>
Jockey Hollow Historic Preservation
Association
<http://www.jockeyhollow.org>
Los Vegas Citizens' Committee for Historic
Preservation
<http://www.lasvegasnewmexico.com/cchp>
Michigan Historic Preservation Network
<http://www.mhpn.org>
Missouri Alliance for Historic Preservation
<http://www.preservemo.org>
National Main Street Center
<http://www.mainst.org>
National Trust for Historic Preservation
<http://www.nthp.org>
Ohio Historic Preservation Office
<http://www.ohiohistory.org/resource/histpres>
Preservation Action Council of San Jose
<http://www.preservation.org>
Preservation Alliance for Greater Philadelphia
<http://www.preservationalliance.com>
Preservation Alliance of Virginia
<http://www.vapreservation.org>
Preservation North Carolina
<http://www.presnc.org>
Preserve & Protect
<http://www.preserve.org>
Smithsonian Institution Architectural
History and Historic Preservation Division
<http://www.si.edu/oahp> | 
