“Thomas Jefferson: Memo on Materials for Architectural Details of Poplar Forest, After 14 June 1822, 14 June 1822,” Founders Online, National Archives, last modified December 28, 2016, http://founders.archives.gov/documents/Jefferson/98-01-02-2884. [This is an
Early Access document
from The Papers of Thomas Jefferson: Retirement Series.
It is not an authoritative final version.]