- Philadelphia (Pa.) -- Politics and government -- 20th century
- Philadelphia (Pa.) -- History -- Revolution, 1775-1783 -- Personal narratives -- Juvenile literature
- Philadelphia (Pa.) -- History -- 1775-1783 -- Juvenile fiction
- Philadelphia (Pa.) -- Buildings, structures, etc -- Juvenile literature
- Philadelphia (Pa.) -- Comic books, strips, etc
- Philadelphia (Pa.) -- History -- 18th century
- Philadelphia (Pa.) -- Juvenile literature
- Philadelphia (Pa.) -- Genealogy
- Philadelphia (Pa.) -- Buildings, structures, etc
- Philadelphia (Pa.) -- Social conditions -- 19th century
- Philadelphia (Pa.) -- Census, 1870 -- Indexes
- Philadelphia (Pa.) -- Politics and government -- 1865-
- Philadelphia (Pa.) -- Biography -- Young adult literature
- Philadelphia (Pa.) -- History
- Philadelphia (Pa.) -- History -- 18th century -- Juvenile fiction
- Philadelphia (Pa.) -- Social conditions -- Congresses
- Philadelphia (Pa.) -- Emigration and immigration -- Social aspects
- Philadelphia (Pa.) -- History -- Revolution, 1775-1783 -- Social aspects -- Juvenile literature
- Philadelphia (Pa.) -- History -- 19th century -- Juvenile fiction
- Philadelphia (Pa.) -- Race relations -- History -- 20th century
- Philadelphia (Pa.) -- History -- Colonial period, ca. 1600-1775 -- Juvenile literature
- Philadelphia (Pa.) -- Social conditions
- Philadelphia (Pa.) -- Emigration and immigration
- Philadelphia (Pa.) -- History -- Revolution, 1775-1783 -- Juvenile fiction
- Philadelphia (Pa.) -- Newspapers
- Philadelphia (Pa.) -- Race relations -- History -- 19th century
- Philadelphia (Pa.) -- History -- Civil War, 1861-1865 -- Social aspects -- Juvenile literature
- Philadelphia (Pa.) -- History -- 19th century
- Philadelphia (Pa.) -- History -- 18th century -- Fiction
- Philadelphia (Pa.) -- History -- Revolution, 1775-1783
- Philadelphia (Pa.) -- History -- Colonial period, ca. 1600-1775 -- Fiction
- Philadelphia (Pa.)
- Philadelphia (Pa.) -- Genealogy -- Sources
- Philadelphia (Pa.) -- Politics and government
- Philadelphia (Pa.) -- Social conditions -- 18th century
- Philadelphia (Pa.) -- Social life and customs -- Drama
- Philadelphia (Pa.) -- Social life and customs
- Philadelphia (Pa.) -- Ethnic relations
- Philadelphia (Pa.) -- History -- Colonial period, ca. 1600-1775
- Philadelphia (Pa.) -- History -- Civil War, 1861-1865
- Philadelphia (Pa.) -- Pictorial works