Societies, etc 5 Church societies 3 Ethnic groups 3 Churches 2 Polish Americans 2 Berks County (Pa.)--History 1 Berks County (Pa.)--History--18th century 1 more ... Catholics 1 Croatian Americans 1 Ethnic art 1 Ethnic grougs 1 Fairmount Park (Philadelphia, Pa) 1 Fairmount Waterworks (Philadelphia, Pa) 1 Festivals 1 Folk art 1 Folk music 1 Folk music groups 1 Glass photonegatives 1 Indians of North America--Trade--18th century 1 Iroquois Indians--18th century 1 Iroquois Indians--Early works to 1800 1 Iroquois Indians--Government relations 1 Iroquois Indians--Government relations--To 1789 1 Iroquois Indians--Land tenure 1 Iroquois Indians--Land tenure--Early works to 1800 1 Iroquois Indians--Treaties 1 Merchants--Pennsylvania--18th century 1 Military supplies--Pittsburgh (Pa.)--History 1 Mohawk Indians--Early works to 1800 1 Mohawk Indians--Government relations 1 Mohawk Indians--History--18th century 1 Mohawk Indians--Land tenure 1 Native Americans 1 New York (State) History French and Indian War, 1755-1763 1 Pennsylvania--History--French and Indian War, 1755-1763 1 Pennsylvania--History--French and Indian War, 1755-1763--Registers 1 Philadelphia Aquarium (Philadelphia, Pa) 1 Pittsburgh (Pa)--images 1 Pittsburgh (Pa.)--History--French and Indian War, 1755-1763 1 Religious life 1 less ...