City of Greeley Historic Preservation – Information on the Greeley Historic Preservation Commission and program, including the list of designated properties and districts on Greeley’s Historic Register. Access it here.

History Colorado – The State of Colorado’s department for historic preservation and the State Historical Fund. Access it here.

Colorado Preservation, Inc. – The statewide historic preservation nonprofit in Colorado, home of Colorado’s Most Endangered Places List and the nationally-known annual Saving Places Conference. Access it here.

National Trust for Historic Preservation – The U.S.’s nonprofit for historic preservation, administering programs such as Main Street, Save America’s Treasures, and Preservation Briefs. Access it here.

National Park Service Secretary of the Interior Standards for Rehabilitation – Important reference document for qualifying historic preservation techniques and practices. Access it here.