Episode Source Material: 

• The Root of the Matter – The Rhode Island Historical Society
• Roger Williams Park cemetery tour untangles route to founder's final resting place
• 1868 Book, “A Fourteen Weeks Course in Chemistry,” by J. Dorman Steele
• Read the eBook Memorial of Roger Williams by Zachariah] [Allen online for free (page 1 of 2)
• Apple Tree Root | EnCompass
• Williams Root - A Brief History of Roger Williams
• Roger Williams and the Founding of Rhode Island | EnCompass
•  “A Key into the Language of America: A help to the Language of the Natives in that part of America called New England.” 
• Roger Williams - Founder of Rhode Island & Salem Minister - HISTORY
• https://en.wikipedia.org/wiki/Roger_Williams
• God, Government and Roger Williams' Big Idea | History
• roger-house-lot - Roger Williams National Memorial (US National Park Service)
• How long does it take for a human body to decompose in a grave?
• Life after death: the science of human decomposition
• Recycling the dead
• "Preserving their form and features": The role of coffins in the American understanding of death, 1607-1870
• Later Years - Roger Williams National Memorial (US National Park Service)
• Roger Williams Biography
• BBC | How can I become a fossil?