Ballrooms - Past and Present: www.iowaballroom.com
Barns: www.iowabarnfoundation.org
Burlington Heritage Trust: www.burlington.lib.ia.us/Heritage%20Trust/index.htm
Council Bluffs Historic Preservation Alliance: www.cbhpa.com
FEH Associates Inc. preservation architects and engineers: www.fehassociates.com
Herriman Mansion, Wadena, Iowa: freepages.history.rootsweb.com/~herrimanmansion/index.html
Historic Color Consulting: www.historichousecolors.com/
Iowa City's Friends of Historic Preservation: www.ic-fhp.org
Iowa Lincoln Highway: www.lincolnhighwayassoc.org/iowa
Iowa Museum Association: www.iowamuseums.org
Iowa Department of Cultural Affairs: www.culturalaffairs.org/index.htm
Johnson County Historical Society: www.jchsiowa.org
National Trust for Historic Preservation: www.nationaltrust.org
Trimble Parker Historic District (Davis County): www.trimble-parker.com
Goose Creek, Hardin County: www.eldoraiowa.com/farmmuseum.asp
McGee, Delaware County: www.mcgeebrickschool.org