^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab acNumbers represent an alphabetical ordering by significant words. Various colorings, defined here, differentiate National Historic Landmarks and historic districts from other NRHP buildings, structures, sites or objects.
^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa abThe eight-digit number below each date is the number assigned to each location in the National Register Information System database, which can be viewed by clicking the number.
^The NRIS gives the location of the Holtz Site as "Address Restricted." However, Lovis (William Lovis (June 1971), "The Holtz Site (20AN26), Antrim Co., Michigan; A Preliminary Report", The Michigan Archaeologist, 17 (2)) gives the location of the site. Geo-coordinates are approximate.
^The Sand Point site is an address restricted site, but is described in the following document as being "east and south" of the camping facility maintained by the Keweenaw Bay Indian Community, on land owned by the KBIC: Sand Point Concept Master Plan (PDF), Keweenaw Bay Indian Community, archived from the original (PDF) on April 26, 2012, retrieved November 30, 2011 The geographic coordinates given are approximate.
^The NRIS gives the location as "address restricted" but Richner (Archeological Excavations at the Platte River Campground Site (20BZ16), Sleeping Bear Dunes National Lakeshore) gives the exact location of the site along the Platte River within Sleeping Bear Dunes National Lakeshore. The geo-coordinates are approximate.
^Andy Klevorn (January 14, 2000). "SS City of Milwaukee arrives in Manistee". Ludington Daily News.
^The NRIS database gives the location of the Archeological District as "address restricted." However, the Menominee River Park is easily identified in Kingsford. The given geocoordinates are approximate.
^Hoffman, Lisa M. (May 17, 2012). "Twin Falls Bridge Nominated". The Daily News. Iron Mountain, MI. Archived from the original on December 2, 2013. Retrieved July 20, 2013.
^The NRIS gives the location as "address restricted." However, the Michigan SHPO has placed a historical marker at the site. The given geo-coordinates are of the dam itself.
^The NRIS lists the Croton Dam Mound Group as "address restricted;" however, references show it is located near Croton. The geo-coordinates given are approximate.
^The NRIS lists the Toft Lake Village Site as "address restricted;" however, references show it is located on the shore of Toft Lake. The geo-coordinates given are approximate.
^The NRIS gives the location of the Dumaw Creek Site as "address restricted." However, references indicate it is located in Weare Township alongside Dumaw Creek. The geo-coordinates given are approximate.
^Staff. "Oscoda County Courthouse". State Historic Preservation Office. Michigan State Housing Development Authority. Archived from the original on May 13, 2013. Retrieved April 6, 2012.
^This site is listed in the NRIS as "address restricted." Binford and Quimby (Binford, Lewis R.; Quimby, George I. (August 29, 1963), "INDIAN SITES AND CHIPPED STONE MATERIALS IN THE NORTHERN LAKE MICHIGAN AREA" (PDF), Fieldiana Anthropology, 36 (12): 277–307, archived from the original (PDF) on April 25, 2012) locate the site as "just west of Seul Choix Point." Griffin (CRANE, H. R.; GRIFFIN, JAMES B. (1972), "University of Michigan Radiocarbon Dates XIV", Radiocarbon, 14 (1): 155–194, Bibcode:1972Radcb..14..155C, doi:10.1017/S0033822200001077, S2CID 28598355) gives the listed approximate degree-minute geolocation of site
^This site is listed in the NRIS as "address restricted." However, Dunham (Sean Barron Dunham (2014), Late Woodland Settlement and Subsistence in the Eastern Upper Peninsula of Michigan (PDF), archived from the original (PDF) on February 12, 2017, retrieved February 11, 2017) gives the location. The listed geo-coordinates are approximate.
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