GhostsOfNorthDakota.com - A chronicle of the depopulation of North Dakota and the remnants of the plains heritage. Hundreds of photographs of the state's ghost towns and settlements. - http://www.ghostsofnorthdakota.com/
Preservation North Dakota - Statewide, grassroots, nonprofit organization that provides resources for local preservationists. Provides a places database, membership information, list of endangered places and local affiliates. - http://www.prairiechurches.org/
State Historical Society of North Dakota Home Page - Preserves and presents history through museums, historic sites, archives library, historic register, publications and programs. - http://www.state.nd.us/hist/index.html
Historical Overviews - Chronology of North Dakota history, and summary history. - http://www.state.nd.us/hist/history.htm