Region
Philadelphia (Pa.)
3
Pennsylvania
2
Schuylkill County
2
Niagara Falls
1
Niagara Falls (N.Y. and Ont.)
1
Niagara, Chutes du (N.Y. et Ont.)
1
North America
1
Philadelphia (Pa.)--Commerce
1
Philadelphia (Pa.)--Economic conditions--20th century
1
Philadelphia (Pa.)--History--Revolution, 1775-1783
1
Philadelphia (Pa.)--Social life and customs--20th century
1