Philadelphia Zoological Garden

Sources

• Hall-Hoag Collection of Dissenting and Extremist Printed Propaganda
• VIAF: 152461955
• LCNAF: LC|n 82023971
• Wikipedia: http://en.wikipedia.org/wiki/Philadelphia_Zoo
• Web: http://www.philadelphiazoo.org/About-the-Zoo.aspx
• DbPedia: http://dbpedia.org/page/Philadelphia_Zoo