Region
Massachusetts
7
Virginia
7
New York (State)
5
California
4
Maryland
3
Pennsylvania
3
Antietam National Battlefield (Md.)
2
Fredericksburg and Spotsylvania National Military Park
2
Fredericksburg and Spotsylvania National Military Park (Va.)
2
Gettysburg National Military Park
2
Gettysburg National Military Park (Pa.)
2
Golden Gate National Recreation Area (Calif.)
2
Harpers Ferry
2
Harpers Ferry National Historical Park
2
Hyde Park (Dutchess County)
2
United States
2
Vanderbilt Mansion National Historic Site (Hyde Park, Dutchess County, N.Y.)
2
West Virginia
2
Adams National Historical Park (Quincy, Mass.)
1
Antietam National Battlefield
1
Appomattox County
1
Appomattox Court House National Historical Park
1
Appomattox Court House National Historical Park (Va.)
1
Battery Weed (N.Y.)
1
Blowmedown Farm
1
Blowmedown Farm (N.H.)
1
Boston Harbor Islands
1
Boston Harbor Islands (Mass.)
1
Boston Harbor Islands National Recreation Area
1
Boston Harbor Islands National Recreation Area (Mass.)
1
Brookhaven (N.Y. : Town)
1
Brookhaven (Town)
1
Brookline
1
Brookline (Mass.)
1
Cambridge
1
Camp Hoover
1
Camp Hoover (Va.)
1
Cape Cod National Seashore
1
Cape Hatteras National Seashore
1
Concord
1
Cornish (N.H. : Town)
1
Cornish (Town)
1
Crater Lake National Park
1
Crater Lake National Park (Or.)
1
Dune Shacks of the Peaked Hill Bars Historic District (Mass.)
1
Fire Island National Seashore
1
Fort Baker (Calif.)
1
Fort Barry Military Reservation (Calif.)
1
Fort Cronkhite (Calif.)
1
Fort Mason
1
more ...