List of National Historic Landmarks in Ohio

This is a list of National Historic Landmarks in Ohio and other landmarks of equivalent landmark status in the state. The United States' National Historic Landmark (NHL) program is operated under the auspices of the National Park Service, and recognizes structures, districts, objects, and similar resources according to a list of criteria of national significance.[6] There are 76 NHLs in Ohio and four additional National Park Service-administered areas of primarily historic importance.[7]

Current National Historic Landmarks in Ohio

Ohio's National Historic Landmarks are distributed across 37 of the 88 counties in the state. With fourteen NHLs, Hamilton County in the southwest corner has more than any other county.

[8] Landmark name Image Date designated[9] Location County Description
1 Adena February 27, 2003
(#70000515) 		Chillicothe
39°21′13″N 83°00′55″W / 39.353613°N 83.015345°W / 39.353613; -83.015345 (Adena) 		Ross Mansion of Thomas Worthington
2 Baum-Taft House January 7, 1976
(#73001470) 		Cincinnati
39°06′09″N 84°30′12″W / 39.1025°N 84.503333°W / 39.1025; -84.503333 (Baum-Taft House) 		Hamilton Taft family home now an art museum; designated for landscape murals by African-American artist Robert S. Duncanson.
3 Beginning Point of the U.S. Public Land Survey June 23, 1965
(#66000606) 		East Liverpool, OH and Ohioville, PA
40°38′26″N 80°31′10″W / 40.640487°N 80.519377°W / 40.640487; -80.519377 (Beginning Point of the U.S. Public Land Survey) 		Columbiana, OH and Beaver, PA Marker of origin of Northwest Territories survey, on Pennsylvania border
4 Carew Tower-Netherland Plaza Hotel April 19, 1994
(#82003578) 		Cincinnati
39°05′56″N 84°31′31″W / 39.099012°N 84.525224°W / 39.099012; -84.525224 (Carew Tower-Netherland Plaza Hotel) 		Hamilton
5 Central Branch, National Home for Disabled Volunteer Soldiers October 16, 2012
(#03001412) 		Dayton
39°44′33″N 84°15′52″W / 39.742368°N 84.26458°W / 39.742368; -84.26458 (Central Branch, National Home for Disabled Volunteer Soldiers) 		Montgomery
6 Cincinnati Music Hall December 2, 1974
(#70000496) 		Cincinnati
39°06′32″N 84°31′06″W / 39.108928°N 84.518286°W / 39.108928; -84.518286 (Cincinnati Music Hall) 		Hamilton
7 Cincinnati Observatory December 9, 1997
(#80003043) 		Cincinnati
39°08′27″N 84°25′22″W / 39.140935°N 84.422699°W / 39.140935; -84.422699 (Cincinnati Observatory) 		Hamilton
8 Cincinnati Union Terminal May 5, 1977
(#72001018) 		Cincinnati
39°06′35″N 84°31′56″W / 39.109778°N 84.532190°W / 39.109778; -84.532190 (Cincinnati Union Terminal) 		Hamilton
9 Cincinnati Zoo Historic Structures February 27, 1987
(#87000905) 		Cincinnati
39°08′33″N 84°30′34″W / 39.142493°N 84.509395°W / 39.142493; -84.509395 (Cincinnati Zoo Historic Structures) 		Hamilton
10 Cleveland Arcade May 15, 1975
(#73001408) 		Cleveland
41°29′59″N 81°41′27″W / 41.499702°N 81.690794°W / 41.499702; -81.690794 (Cleveland Arcade) 		Cuyahoga
11 USS Cod (Submarine) January 14, 1986
(#86000088) 		Cleveland
41°30′30″N 81°41′32″W / 41.508328°N 81.692132°W / 41.508328; -81.692132 (USS Cod (Submarine)) 		Cuyahoga The USS Cod Submarine Memorial is a National Historic Landmark and is docked in Cleveland, Ohio.
12 Jay Cooke Home November 13, 1966
(#66000620) 		Gibraltar Island
41°39′29″N 82°49′16″W / 41.658056°N 82.821111°W / 41.658056; -82.821111 (Jay Cooke Home) 		Ottawa Summer home of financier Jay Cooke
13 Covington And Cincinnati Suspension Bridge May 15, 1975
(#75000786) 		Cincinnati, OH and Covington, KY
39°05′25″N 84°30′34″W / 39.09039°N 84.509571°W / 39.09039; -84.509571 (Covington And Cincinnati Suspension Bridge) 		Hamilton, OH and Kenton, KY John A. Roebling's suspension bridge here was dramatic new design. It set precedent for Brooklyn Bridge later.
14 Manasseh Cutler Hall, Ohio University December 21, 1965
(#66000604) 		Athens
39°19′27″N 82°06′02″W / 39.324184°N 82.100512°W / 39.324184; -82.100512 (Manasseh Cutler Hall, Ohio University) 		Athens
15 Donald B. (Towboat) December 20, 1989
(#89002458) 		Bellaire
40°01′16″N 80°44′17″W / 40.02111°N 80.73805°W / 40.02111; -80.73805 (Donald B. (Towboat)) 		Belmont The Donald B. was built in 1923 and is the only 1920s unchanged diesel sternwheel towboat left in the United States. It still operates towing barges in the Ohio River.[10] After years of being located in Switzerland County, Indiana, its home port was moved to Bellaire, Ohio in 2012.[11]
16 Paul Laurence Dunbar House December 29, 1962
(#66000619) 		Dayton
39°45′27″N 84°13′07″W / 39.757366°N 84.218681°W / 39.757366; -84.218681 (Paul Laurence Dunbar House) 		Montgomery Home of black poet Paul Laurence Dunbar
17 Thomas A. Edison Birthplace January 12, 1965
(#66000608) 		Milan
41°18′00″N 82°36′16″W / 41.300066°N 82.604437°W / 41.300066; -82.604437 (Thomas A. Edison Birthplace) 		Erie
18 Eldean Covered Bridge December 23, 2016
(#100000868) 		Troy
40°04′40″N 84°13′00″W / 40.077902°N 84.216666°W / 40.077902; -84.216666 (Eldean Covered Bridge) 		Miami Only one of twelve long truss bridges still intact. It is considered to be the most structurely intact.[12]
19 Wilson Bruce Evans House December 9, 1997
(#80003143) 		Oberlin
41°17′20″N 82°12′59″W / 41.288888°N 82.216321°W / 41.288888; -82.216321 (Wilson Bruce Evans House) 		Lorain
20 Fallen Timbers Battlefield October 9, 1960
(#66000616) 		Maumee
41°32′32″N 83°41′51″W / 41.542262°N 83.697445°W / 41.542262; -83.697445 (Fallen Timbers Battlefield) 		Lucas
21 Fort Ancient July 19, 1964
(#66000625) 		Lebanon
39°24′29″N 84°05′28″W / 39.40806°N 84.0911°W / 39.40806; -84.0911 (Fort Ancient) 		Warren
22 Fort Meigs August 4, 1969
(#69000151) 		Perrysburg
41°33′03″N 83°39′05″W / 41.550806°N 83.651523°W / 41.550806; -83.651523 (Fort Meigs) 		Wood
23 James A. Garfield Home January 28, 1964
(#66000613) 		Mentor
41°39′49″N 81°21′04″W / 41.663616°N 81.351052°W / 41.663616; -81.351052 (James A. Garfield Home) 		Lake
24 Joshua R. Giddings Law Office May 30, 1974
(#74001396) 		Jefferson
41°44′18″N 80°45′47″W / 41.738351°N 80.763127°W / 41.738351; -80.763127 (Joshua R. Giddings Law Office) 		Ashtabula
25 Glendale Historic District May 5, 1977
(#76001447) 		Glendale
39°16′18″N 84°27′49″W / 39.271634°N 84.46362°W / 39.271634; -84.46362 (Glendale Historic District) 		Hamilton
26 U.S. Grant Boyhood Home February 4, 1985
(#76001374) 		Georgetown
38°51′57″N 83°54′08″W / 38.865814°N 83.902148°W / 38.865814; -83.902148 (U.S. Grant Boyhood Home) 		Brown
27 Greenhills Historic District December 23, 2016
(#100000800) 		Greenhills
39°15′50″N 84°31′28″W / 39.263889°N 84.524444°W / 39.263889; -84.524444 (Greenhills Historic District) 		Hamilton
28 Warren G. Harding Home June 23, 1965
(#66000618) 		Marion
40°35′11″N 83°07′18″W / 40.586279°N 83.121691°W / 40.586279; -83.121691 (Warren G. Harding Home) 		Marion
29 Hawthorn Hill July 17, 1991
(#74001585) 		Oakwood
39°43′13″N 84°10′34″W / 39.720416°N 84.176224°W / 39.720416; -84.176224 (Hawthorn Hill) 		Montgomery The Orville Wright mansion.
30 Hopeton Earthworks July 19, 1964
(#66000623) 		Hopetown
39°22′47″N 82°59′08″W / 39.379604°N 82.985474°W / 39.379604; -82.985474 (Hopeton Earthworks) 		Ross
31 Huffman Prairie Flying Field June 21, 1990
(#71000640) 		Fairborn
39°48′12″N 84°03′57″W / 39.803333°N 84.065833°W / 39.803333; -84.065833 (Huffman Prairie Flying Field) 		Greene
32 Johnson's Island Civil War Prison June 21, 1990
(#75001514) 		Danbury
41°29′42″N 82°44′12″W / 41.494998°N 82.73675°W / 41.494998; -82.73675 (Johnson's Island Civil War Prison) 		Ottawa
33 Charles F. Kettering House December 22, 1977
(#77001080) 		Kettering
39°41′33″N 84°11′34″W / 39.692590°N 84.192796°W / 39.692590; -84.192796 (Charles F. Kettering House) 		Montgomery
34 Kirtland Temple December 8, 1976
(#69000145) 		Kirtland
41°37′33″N 81°21′44″W / 41.625958°N 81.362149°W / 41.625958; -81.362149 (Kirtland Temple) 		Lake
35 John Mercer Langston House May 15, 1975
(#75001464) 		Oberlin
41°17′30″N 82°12′31″W / 41.291556°N 82.208590°W / 41.291556; -82.208590 (John Mercer Langston House) 		Lorain
36 Langstroth Cottage December 21, 1981
(#76001378) 		Oxford
39°30′17″N 84°43′49″W / 39.504648°N 84.730223°W / 39.504648; -84.730223 (Langstroth Cottage) 		Butler
37 Edward D. Libbey House May 4, 1983
(#83004379) 		Toledo
41°39′38″N 83°33′32″W / 41.660549°N 83.559008°W / 41.660549; -83.559008 (Edward D. Libbey House) 		Lucas
38 Benjamin Lundy House May 30, 1974
(#74001537) 		Mt. Pleasant
40°10′29″N 80°48′13″W / 40.17483°N 80.80354°W / 40.17483; -80.80354 (Benjamin Lundy House) 		Jefferson
39 MAJESTIC (Showboat) December 20, 1989
(#80003085) 		Cincinnati
39°05′42″N 84°30′17″W / 39.09497°N 84.50467°W / 39.09497; -84.50467 (MAJESTIC (Showboat)) 		Hamilton
40 May 4, 1970, Kent State Shootings Site December 23, 2016
(#100000879) 		Kent
41°09′00″N 81°20′36″W / 41.1501°N 81.3433°W / 41.1501; -81.3433 (May 4, 1970, Kent State Shootings Site) 		Portage Site of May 4, 1970, shootings of Vietnam War protesters by Ohio National Guardsmen that killed four.
41 William H. McGuffey Boyhood Home Site May 23, 1966
(#66000617) 		Coitsville Township
41°06′57″N 80°33′31″W / 41.115833°N 80.558611°W / 41.115833; -80.558611 (William H. McGuffey Boyhood Home Site) 		Mahoning
42 William H. McGuffey House December 21, 1965
(#66000605) 		Oxford
39°30′26″N 84°44′10″W / 39.507230°N 84.736078°W / 39.507230; -84.736078 (William H. McGuffey House) 		Butler
43 William McKinley Tomb May 15, 1975
(#70000516) 		Canton
40°48′24″N 81°23′33″W / 40.806667°N 81.3925°W / 40.806667; -81.3925 (William McKinley Tomb) 		Stark
44 Miami and Erie Canal Deep Cut January 29, 1964
(#66000603) 		Spencerville
40°41′15″N 84°21′55″W / 40.6875°N 84.365278°W / 40.6875; -84.365278 (Miami and Erie Canal Deep Cut) 		Allen and Auglaize Mile long segment of the Miami and Erie Canal cut as deep as 52 feet (16 m), in order to cut a trough through a blue clay ridge separating the St. Marys and Auglaize River watersheds
45 Mount Pleasant Historic District April 5, 2005
(#74001536) 		Mt. Pleasant
40°10′28″N 80°47′55″W / 40.174444°N 80.798611°W / 40.174444; -80.798611 (Mount Pleasant Historic District) 		Jefferson
46 Newark Earthworks July 19, 1964
(#66000614) 		Heath and Newark
40°02′32″N 82°25′48″W / 40.042167°N 82.430111°W / 40.042167; -82.430111 (Newark Earthworks) 		Licking
47 Oberlin College December 21, 1965
(#66000615) 		Oberlin
41°17′35″N 82°13′07″W / 41.292929°N 82.218576°W / 41.292929; -82.218576 (Oberlin College) 		Lorain
48 Ohio and Erie Canal November 13, 1966
(#66000607) 		Valley View
41°22′14″N 81°36′59″W / 41.370525°N 81.616442°W / 41.370525; -81.616442 (Ohio and Erie Canal) 		Cuyahoga A four mile (6 km) section of canal, including Tinkers Creek Aqueduct
49 Ohio Statehouse December 22, 1977
(#72001011) 		Columbus
39°57′41″N 82°59′56″W / 39.961389°N 82.998889°W / 39.961389; -82.998889 (Ohio Statehouse) 		Franklin
50 Ohio Theatre May 5, 1977
(#73001437) 		Columbus
39°57′37″N 82°59′57″W / 39.960281°N 82.999078°W / 39.960281; -82.999078 (Ohio Theatre) 		Franklin
51 John P. Parker House February 18, 1997
(#97000340) 		Ripley
38°44′56″N 83°50′56″W / 38.748852°N 83.848872°W / 38.748852; -83.848872 (John P. Parker House) 		Brown
52 George Hunt Pendleton House January 29, 1964
(#66000611) 		Cincinnati
39°06′36″N 84°30′16″W / 39.110102°N 84.504483°W / 39.110102; -84.504483 (George Hunt Pendleton House) 		Hamilton
53 Pennsylvania Railroad Depot and Baggage Room June 17, 2011
(#76001536) 		Dennison
40°23′32″N 81°19′56″W / 40.392155°N 81.332178°W / 40.392155; -81.332178 (Pennsylvania Railroad Depot and Baggage Room) 		Tuscarawas
54 People's Federal Savings and Loan Association December 22, 1977
(#72001042) 		Sidney
40°17′04″N 84°09′23″W / 40.284410°N 84.156437°W / 40.284410; -84.156437 (People's Federal Savings and Loan Association) 		Shelby Louis Sullivan-designed bank building
55 Plum Street Temple May 15, 1975
(#72001021) 		Cincinnati
39°06′14″N 84°31′07″W / 39.103937°N 84.518678°W / 39.103937; -84.518678 (Plum Street Temple) 		Hamilton
56 John Rankin House February 18, 1997
(#70000485) 		Ripley
38°45′04″N 83°50′32″W / 38.751111°N 83.842222°W / 38.751111; -83.842222 (John Rankin House) 		Brown Home of John Rankin, abolitionist.
57 Captain Edward V. Rickenbacker House May 11, 1976
(#76001426) 		Columbus
39°56′58″N 82°57′44″W / 39.949339°N 82.962179°W / 39.949339; -82.962179 (Captain Edward V. Rickenbacker House) 		Franklin
58 S. Bridge, National Road January 29, 1964
(#66000610) 		Old Washington
40°02′36″N 81°22′27″W / 40.043298°N 81.374300°W / 40.043298; -81.374300 (S. Bridge, National Road) 		Guernsey
59 Serpent Mound July 19, 1964
(#66000602) 		Locust Grove
39°01′00″N 83°26′00″W / 39.0166666°N 83.433334°W / 39.0166666; -83.433334 (Serpent Mound) 		Adams
60 Sherman Birthplace January 29, 1964
(#66000609) 		Lancaster
39°42′49″N 82°36′04″W / 39.713722°N 82.600988°W / 39.713722; -82.600988 (Sherman Birthplace) 		Fairfield
61 Dr. Bob's Home (Dr. Robert and Anne Smith House) October 16, 2012
(#85003411) 		Akron
41°05′45″N 81°32′57″W / 41.095797°N 81.549234°W / 41.095797; -81.549234 (Dr. Bob's Home (Dr. Robert and Anne Smith House)) 		Summit Birthplace of Alcoholics Anonymous,[13] co-founded by Bob Smith (doctor)
62 Spacecraft Propulsion Research Facility (B-2) October 3, 1985
(#85002802) 		Sandusky
41°21′55″N 82°41′01″W / 41.365141°N 82.6837°W / 41.365141; -82.6837 (Spacecraft Propulsion Research Facility (B-2)) 		Erie the world's only facility capable of testing full-scale upper-stage launch vehicles and rocket engines under simulated high-altitude conditions.
63 Spiegel Grove (Rutherford B. Hayes Home) January 29, 1964
(#66000624) 		Fremont
41°20′31″N 83°07′35″W / 41.342037°N 83.126354°W / 41.342037; -83.126354 (Spiegel Grove (Rutherford B. Hayes Home)) 		Sandusky Estate of U.S. president Rutherford B. Hayes, now a state park
64 Spring Grove Cemetery March 29, 2007
(#76001440) 		Cincinnati
39°09′53″N 84°31′23″W / 39.164661°N 84.522949°W / 39.164661; -84.522949 (Spring Grove Cemetery) 		Hamilton
65 Stan Hywet Hall December 21, 1981
(#75002058) 		Akron
41°07′02″N 81°32′55″W / 41.117104°N 81.548583°W / 41.117104; -81.548583 (Stan Hywet Hall) 		Summit
66 Sunwatch Site June 21, 1990
(#75001500) 		Dayton
39°42′48″N 84°13′55″W / 39.71321°N 84.231861°W / 39.71321; -84.231861 (Sunwatch Site) 		Montgomery
67 Alphonso Taft Home (William Howard Taft Home) January 29, 1964
(#66000612) 		Cincinnati
39°06′03″N 84°30′12″W / 39.100707°N 84.503311°W / 39.100707; -84.503311 (Alphonso Taft Home (William Howard Taft Home)) 		Hamilton Birthplace and home until age 25 of U.S. President William Howard Taft
68 John B. Tytus House May 11, 1976
(#75001335) 		Middletown
39°30′47″N 84°24′30″W / 39.513148°N 84.408301°W / 39.513148; -84.408301 (John B. Tytus House) 		Butler
69 Harriet Taylor Upton House October 5, 1992
(#92001884) 		Warren
41°14′22″N 80°49′21″W / 41.239442°N 80.822558°W / 41.239442; -80.822558 (Harriet Taylor Upton House) 		Trumbull
70 Village of Mariemont March 29, 2007
(#07000431) 		Mariemont
39°08′35″N 84°22′51″W / 39.143056°N 84.380833°W / 39.143056; -84.380833 (Village of Mariemont) 		Hamilton
71 W.P. SNYDER, JR. (Towboat) June 29, 1989
(#70000522) 		Marietta
39°25′06″N 81°27′48″W / 39.418301°N 81.463291°W / 39.418301; -81.463291 (W.P. SNYDER, JR. (Towboat)) 		Washington
72 Wright Cycle Company And Wright Printing Shop June 21, 1990
(#86000236) 		Dayton
39°45′20″N 84°12′43″W / 39.755525°N 84.212047°W / 39.755525; -84.212047 (Wright Cycle Company And Wright Printing Shop) 		Montgomery
73 Wright Flyer III June 21, 1990
(#90001747) 		Dayton
39°43′33″N 84°12′07″W / 39.725907°N 84.202073°W / 39.725907; -84.202073 (Wright Flyer III) 		Montgomery 1905 Wright Flyer III airplane
74 Colonel Charles Young House May 30, 1974
(#74001506) 		Wilberforce
39°42′26″N 83°53′25″W / 39.707252°N 83.890227°W / 39.707252; -83.890227 (Colonel Charles Young House) 		Greene Now the Charles Young Buffalo Soldiers National Monument.
75 Zero Gravity Research Facility October 3, 1985
(#85002801) 		Cleveland
41°24′37″N 81°51′51″W / 41.410245°N 81.8641°W / 41.410245; -81.8641 (Zero Gravity Research Facility) 		Cuyahoga vacuum chamber where drop tests are conducted to simulate low gravity conditions
76 Zoar Historic District October 31, 2016
(#16000859) 		Zoar
40°36′47″N 81°25′18″W / 40.613056°N 81.421667°W / 40.613056; -81.421667 (Zoar Historic District) 		Tuscarawas Only permanent home of the Society of Separatists in the United States.[14]

Historic areas of the National Park System in Ohio

National Historic Sites, National Historic Parks, National Memorials, and certain other areas listed in the National Park system are historic landmarks of national importance that are highly protected already, sometimes before the inauguration of the NHL program in 1960, and are then often not also named NHLs per se. There are seven of these in Ohio. The National Park Service lists these seven together with the NHLs in the state.[15]

The James A. Garfield National Historic Site, the William Howard Taft National Historic Site, and the Charles Young Buffalo Soldiers National Monument are also designated as NHLs and are listed above. The remaining four are as follows.

Landmark name
 Image Date established[16] Location County Description
1 Dayton Aviation Heritage National Historical Park October 16, 1992 Dayton, Ohio Includes the Huffman Prairie Flying Field, Wright Cycle Company building, 1905 Wright Flyer III, Paul Laurence Dunbar State Memorial, and Hawthorn Hill NHLs
2 First Ladies National Historic Site October 11, 2000 Canton Stark
3 Hopewell Culture National Historical Park March 2, 1923 Chillicothe Ross
4 Perry's Victory and International Peace Memorial June 2, 1936 Put-in-Bay Ottawa

Former NHLs in Ohio

Landmark name[17] Image Date designated Date withdrawn Locality County Description
1 Hotel Breakers March 9, 1987 August 7, 2001 Sandusky Erie Significantly altered in 1999.
2 Rocket Engine Test Facility October 3, 1985 May 4, 2005 Cleveland Cuyahoga Demolished in 2003.
3 Benjamin F. Wade House December 21, 1965[18] 1968 or 1970[18] Jefferson Ashtabula Home of Civil War-era politician Benjamin F. Wade; demolished c. 1968.[18]

See also

References

  1. ^ "Donald B. (Towboat)". National Historic Landmarks Program. National Park Service. Archived from the original on June 5, 2011. Retrieved June 5, 2009.
  2. ^ Contact Us Archived 2011-07-26 at the Wayback Machine, Historic Preservation Society [former owner], n.d. Accessed 2012-06-24.
  3. ^ "Interior Department Announces 24 New National Historic Landmarks". January 11, 2017.
  4. ^ "History | Dr Bob's Home". Archived from the original on March 25, 2014. Retrieved April 16, 2014.
  5. ^ "Secretary Jewell, Director Jarvis Announce 10 New National Historic Landmarks Illustrating America's Diverse History, Culture". Department of the Interior. November 2, 2016. Retrieved November 3, 2016.
  6. ^ National Park Service. "National Historic Landmarks Program: Questions and Answers". Archived from the original on May 31, 2009. Retrieved September 21, 2007.
  7. ^ National Park Service (June 2011). "National Historic Landmarks Survey: List of National Historic Landmarks by State" (PDF). Archived from the original (PDF) on November 5, 2011. Retrieved July 4, 2011.
  8. ^ Numbers 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.
  9. ^ The 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.
  10. ^ "Donald B. (Towboat)". National Historic Landmarks Program. National Park Service. Archived from the original on June 5, 2011. Retrieved June 5, 2009.
  11. ^ Contact Us Archived 2011-07-26 at the Wayback Machine, Historic Preservation Society [former owner], n.d. Accessed 2012-06-24.
  12. ^ "Interior Department Announces 24 New National Historic Landmarks". January 11, 2017.
  13. ^ "History | Dr Bob's Home". Archived from the original on March 25, 2014. Retrieved April 16, 2014.
  14. ^ "Secretary Jewell, Director Jarvis Announce 10 New National Historic Landmarks Illustrating America's Diverse History, Culture". Department of the Interior. November 2, 2016. Retrieved November 3, 2016.
  15. ^ These are listed on p.115 of "National Historic Landmarks Survey: List of National Historic Landmarks by State", November 2007 version.
  16. ^ Date of listing as National Historic Site or similar designation, from various sources in articles indexed.
  17. ^ National Park Service (June 2010). "National Historic Landmarks Program: List of National Historic Landmarks by State" (PDF). Archived from the original (PDF) on August 29, 2010. Retrieved July 26, 2010.
  18. ^ a b c "Withdrawal of Designation: Benjamin F. Wade House". National Park Service. Archived from the original on March 16, 2016. Retrieved April 13, 2015.
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