Region
Missouri
Saint Louis (Mo.)
3
New York (State)
2
Saint Louis
2
Boston
1
Boston (Mass.)
1
Colorado
1
Covington
1
Ecuador
1
Harqua Hala Gold Mine
1
Kansas
1
Kentucky
1
Marquette
1
Marquette (Mich.)
1
Massachusetts
1
Michigan
1
Mississippi River
1
Montana
1
New York
1
Sheldon Farm (Essex, N.Y.)
1
Somerville
1
Somerville (Mass.)
1
South America
1
Southern States
1
Split Rock Forest (N.Y.)
1
United States
1
Utah
1
West (U.S.)
1
West Virginia
1