Region
New York (State)
9
Hyde Park (Dutchess County)
4
Massachusetts
4
Vanderbilt Mansion National Historic Site (Hyde Park, Dutchess County, N.Y.)
4
Oyster Bay
3
Sagamore Hill National Historic Site (Oyster Bay, N.Y.)
3
Blowmedown Farm
2
Blowmedown Farm (N.H.)
2
Cambridge
2
Cornish (N.H. : Town)
2
Cornish (Town)
2
Fredericksburg and Spotsylvania National Military Park
2
Gettysburg National Military Park
2
Gettysburg National Military Park (Pa.)
2
Longfellow House-Washington's Headquarters National Historic Site (Cambridge, Mass.)
2
Martin Van Buren National Historic Site
2
Martin Van Buren National Historic Site (N.Y.)
2
New Hampshire
2
Orange County (Va.)
2
Pawtucket
2
Pennsylvania
2
Rhode Island
2
Saint-Gaudens National Historical Park (Cornish, N.H.)
2
Slater Mill Historic Site
2
Slater Mill Historic Site (R.I.)
2
Spotsylvania County (Va.)
2
Virginia
2
Wilderness Battlefield (Va.)
2
America
1
Brookline
1
Brookline (Mass.)
1
California
1
European Union countries
1
Frederick Law Olmsted National Historic Site (Brookline, Mass.)
1
Gettysburg (Pa.)
1
Israel
1
Muir Woods National Monument
1
Muir Woods National Monument (Calif.)
1
Salem Maritime National Historic Site
1
Salem Maritime National Historic Site (Mass.)
1