Region
Boston
1
Boston (Mass.)
1
Ecuador
1
Harqua Hala Gold Mine
1
Marquette
1
Marquette (Mich.)
1
Massachusetts
1
Michigan
Missouri
1
New York (State)
1
Saint Louis
1
Saint Louis (Mo.)
1
Sheldon Farm (Essex, N.Y.)
1
Somerville
1
Somerville (Mass.)
1
South America
1
Split Rock Forest (N.Y.)
1
West Virginia
1