Encyclopædia Britannica, Ninth Edition/Philadelphia

In the 9th edition of the Encyclopædia Britannica, Philadelphia may refer to:

• Several towns named Philadelphia in antiquity, including
  • the ancient town of Philadelphia, the modern Ala-Shehr in Asiatic Turkey, and
  • the ancient town of Philadelphia, the modern Ammân in Eastern Palestine; or
• the town of Philadelphia in Pennsylvania, U.S.A.