Berks County (Pa.)--History 1 Berks County (Pa.)--History--18th century 1 Fairmount Park (Philadelphia, Pa) 1 Fairmount Waterworks (Philadelphia, Pa) 1 Glass photonegatives 1 Indians of North America--Trade--18th century 1 Iroquois Indians--18th century 1 more ... 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 Six Nations 1 United States--History--Colonial period, ca. 1600-1775 1 United States--History--French and Indian War, 1755-1763--Campaigns 1 United States--History--French and Indian War, 1755-1763--Economic aspects 1 United States--History--French and Indian War, 1755-1763--Personal narratives 1 United States--History--French and Indian War, 1755-1763--Registers 1 United States--History--French and Indian War, 1755-1763--Registers of dead 1 Virginia--History--French and Indian War, 1755-1763 1 less ...