American and Canadian: A Comprehensive Directory/Guide to Great Lakes Lighthouses, (Gwinn, Michigan: Avery Color Studios, Inc., 1998) . Penrod, John, Lighthouses of Michigan, (Berrien Center, Michigan: Penrod/Hiawatha, 1998) . Putnam, George R., Lighthouses and Lightships of the United States, (Boston: Houghton Mifflin Co., 1933). United States Coast Guard, Aids to Navigation, (Washington, DC: U. S. Government Printing Office, 1945). Wagner, John L., Michigan Lighthouses: An Aerial Photographic Perspective, (East Lansing, Michigan: John L. Wagner, 1998) . Wright, Larry and Wright, Patricia, Great Lakes Lighthouses Encyclopedia (Erin: Boston Mills Press, 2006) . External links Aerial photos, Frankfort Lighthouse, marinas.com. National Historic Lighthouse Preservation Act FACT SHEET (March 7, 2005). Lighthouses completed in 1873 Lighthouses completed in 1932 Lighthouses on the National Register of Historic Places in Michigan Buildings and structures in Benzie County, Michigan National Register of Historic Places in Benzie County, Michigan