Region
United States
États-Unis
14
Washington (D.C.)
6
Mississippi River Valley
3
Ohio River Valley
3
USA
3
Canada
2
Great Britain
2
New York
2
Serbia
2
ESTADOS UNIDOS
1
Grande-Bretagne
1
Illinois
1
Massachusetts
1
Mississippi, Vallée du
1
New York (N.Y.)
1
New York (State)
1
Ohio, Vallée de l'
1
Quincy (Mass.)
1
États-Unis
1