Question: What is the date designated of the West Virginia National Historic Landmark that includes two mansions ?

text: List of National Historic Landmarks in West Virginia
National Historic Landmarks in West Virginia
There are 16 National Historic Landmarks in the state . The following is a complete list . Map all coordinates using : OpenStreetMap Download coordinates as : KML · GPX
This article includes a List of National Historic Landmarks in West Virginia, as well as a list of National Park Service administered areas in West Virginia.
Landmark name Date designated Location County Description
1 Andrews Methodist Episcopal Church October 5 , 1992 ( # 70000667 ) Grafton 39°20′20″N 80°01′07″W / 39.3388548502°N 80.0185436005°W / 39.3388548502 ; -80.0185436005 ( Andrews Methodist Episcopal Church ) Taylor Where the Mother 's Day holiday was started
2 Baltimore and Ohio Railroad Martinsburg Shops July 31 , 2003 ( # 03001045 ) Martinsburg 39°27′39″N 77°57′34″W / 39.460833°N 77.959444°W / 39.460833 ; -77.959444 ( Baltimore and Ohio Railroad Martinsburg Shops ) Berkeley Architecturally significant railway buildings , also where the Great Railroad Strike of 1877 began
3 Campbell Mansion April 19 , 1994 ( # 70000651 ) Bethany 40°12′21″N 80°32′51″W / 40.2057321567°N 80.5476076794°W / 40.2057321567 ; -80.5476076794 ( Campbell Mansion ) Brooke Home of Alexander Campbell , founder and president of Bethany College
4 Clover Site April 27 , 1992 ( # 92001881 ) Lesage 38°35′24″N 82°13′54″W / 38.590000°N 82.231667°W / 38.590000 ; -82.231667 ( Clover Site ) Cabell Archaeological site
5 Davis and Elkins Historic District June 7 , 1998 ( # 96001129 ) Elkins 38°55′44″N 79°50′57″W / 38.9289808836°N 79.8492664145°W / 38.9289808836 ; -79.8492664145 ( Davis and Elkins Historic District ) Randolph Historic district including Graceland and Halliehurst mansions
6 Elkins Coal and Coke Company Historic District May 4 , 1983 ( # 83003249 ) Bretz 39°32′42″N 79°48′35″W / 39.545000°N 79.809722°W / 39.545000 ; -79.809722 ( Elkins Coal and Coke Company Historic District ) Preston 140 beehive coke ovens , the last operated in the United States
7 Grave Creek Mound July 19 , 1964 ( # 66000751 ) Moundsville 39°55′00″N 80°44′42″W / 39.91676°N 80.744978°W / 39.91676 ; -80.744978 ( Grave Creek Mound ) Marshall The United States ' largest cone-shaped burial mound , 62 feet ( 19 m ) tall , 240 feet ( 73 m ) diameter at base
8 The Greenbrier June 21 , 1990 ( # 74002000 ) White Sulphur Springs 37°47′07″N 80°18′30″W / 37.7854°N 80.3083°W / 37.7854 ; -80.3083 ( The Greenbrier ) Greenbrier Hotel and emergency relocation center for the U.S. congress
9 Matewan Historic District February 18 , 1997 ( # 93000303 ) Matewan 37°37′23″N 82°09′59″W / 37.623056°N 82.166389°W / 37.623056 ; -82.166389 ( Matewan Historic District ) Mingo Site of bloody 1920 coal miners ' strike depicted in John Sayles ' film Matewan
10 Old Main , Bethany College June 21 , 1990 ( # 70000652 ) Bethany 40°12′14″N 80°33′37″W / 40.2038891197°N 80.5603100305°W / 40.2038891197 ; -80.5603100305 ( Old Main , Bethany College ) Brooke Historic main building on Bethany College campus
11 Reber Radio Telescope December 20 , 1989 ( # 72001291 ) Green Bank 38°25′42″N 79°49′04″W / 38.428307822°N 79.8179043296°W / 38.428307822 ; -79.8179043296 ( Reber Radio Telescope ) Pocahontas First parabolic radio telescope , built by amateur astronomer Grote Reber
12 Traveller 's Rest November 28 , 1972 ( # 72001288 ) Kearneysville 39°23′17″N 77°54′03″W / 39.388056°N 77.900833°W / 39.388056 ; -77.900833 ( Traveller 's Rest ) Jefferson Homestead of General Horatio Gates and a rare surviving example of Virginia architect John Ariss 's work
13 Alexander Wade House December 21 , 1965 ( # 66000752 ) Morgantown 39°37′31″N 79°57′30″W / 39.625271°N 79.958328°W / 39.625271 ; -79.958328 ( Alexander Wade House ) Monongalia Home of innovative educator Alexander Wade
14 West Virginia Independence Hall June 20 , 1988 ( # 70000660 ) Wheeling 40°03′53″N 80°43′20″W / 40.064742°N 80.722142°W / 40.064742 ; -80.722142 ( West Virginia Independence Hall ) Ohio Site of 1861-1863 pro-Union government of Virginia
15 Weston Hospital June 21 , 1990 ( # 78002805 ) Weston 39°02′19″N 80°28′17″W / 39.03861°N 80.4713889°W / 39.03861 ; -80.4713889 ( Weston Hospital ) Lewis One of the largest hand-cut stone masonry buildings in the United States
16 Wheeling Suspension Bridge May 15 , 1975 ( # 70000662 ) Wheeling 40°04′06″N 80°43′38″W / 40.0682684288°N 80.7273516865°W / 40.0682684288 ; -80.7273516865 ( Wheeling Suspension Bridge ) Ohio World 's first long suspension bridge