|←Author Index: Pe||William Penn
|Founder and "Absolute Proprietor" of the Province of Pennsylvania, the English North American colony and the future U.S. state of Pennsylvania; an early champion of democracy and religious freedom and famous for his treaty with the Lenape Indians|
- No Cross, No Crown (1669)
- True Spiritual Liberty (1681) 
- Some Fruits of Solitude In Reflections And Maxims (1682) 
- Frame Of Government Of Pennsylvania (1682) From the Avalon Project, Yale Law School. 
- Letter to his wife, Gulielma (1682) 
- A Key (1692) 
- Primitive Christianity Revived (1696) 
- Preface to George Fox's Journal (1694) 
- An Essay towards the Present and Future Peace of Europe by the Establishment of an European Dyet, Parliament or Estates (1693) 
- Charter of Delaware
Works about Penn
- “Penn, William” in The American Cyclopædia, 1879.
- “Penn, William (1644-1718),” in Dictionary of National Biography, London: Smith, Elder, & Co., (1885–1900) in 63 vols.
- “Penn, William,” in Appletons' Cyclopædia of American Biography, New York: D. Appleton and Co. (1900)
- “The story of a young Quaker,” in The Coming of the White Men by Mary Hazelton Blanchard Wade, 1905
- “Penn, William,” The New International Encyclopædia. New York: Dodd, Mead and Co., 1905.
- “Penn, William” in The Nuttall Encyclopædia by James Wood, London: Frederick Warne and Co., Ltd., 1907.
- “Penn, William,” in A Short Biographical Dictionary of English Literature by John William Cousin, London: J. M. Dent & Sons, 1910.
- “Penn, William (English Quaker)”, in Encyclopædia Britannica, (11th ed.), 1911
- “Penn, William,” in The New Student's Reference Work, Chicago: F.E. Compton and Co. (1914)
- “Penn, William,” in Collier's New Encyclopedia, New York: P. F. Collier & Son Co. (1921)
- William Penn by John Greenleaf Whittier
- Public Law 98-516, enacted October 19, 1984, by the 98th Congress of the United States
- Proclamation 5284, 28 November 1984, by Ronald Reagan