Texas Historical Commission, www.thc.state.tx.us

Preservation Texas, www.preservationtexas.com

National Trust for Historic Preservation, www.preservationnation.org

American Association of State and Local History, www.aaslh.org

Association for Living History, Farm and Agricultural Museums, www.alhfam.org

Texas Historical Foundation, www.texashistoricalfoundation.org.

Dallas County Historical Commission www.Dallascounty.org/department/plandev/dchc.