Encyclopedia articles
About the city in Pennsylvania
- "Philadelphia," by J. W. Hawes in The American Cyclopædia (1879)
- "Philadelphia (2.)," by Charles Henry Hart in Encyclopædia Britannica, Ninth Edition (v. 18) (1885)
- "Philadelphia," in A Dictionary of Music and Musicians, (ed.) by George Grove, London: MacMillan & Co., Ltd. (1900)
- "Philadelphia," in The New International Encyclopædia, New York: Dodd, Mead and Co. (1905)
- "Philadelphia," in The Nuttall Encyclopædia, (ed.) by James Wood, London: Frederick Warne and Co., Ltd. (1907)
- "Philadelphia (Pennsylvania)," in Encyclopædia Britannica (11th ed., 1911)
- "Philadelphia, Pa.," in The New Student's Reference Work, Chicago: F.E. Compton and Co. (1914)
- "Philadelphia," in Collier's New Encyclopedia, New York: P. F. Collier & Son Co. (1921)
- "Philadelphia," by Albert E. McKinley in Encyclopædia Britannica (12th ed., 1922)
International cities
Nonfiction volumes
See also