The Third Crossing dramaturgy

By Thomas Jefferson. Google E-book (requires free login).

University of Chicago Press: "Query 14: Laws" and "Query 18: Manners"

Princeton University Press, 1997.

American Memory, Library of Congress

University of Virginia Library

TTC, Sc. 2 "Mathematical Problem" source text is on pp. 436-8.

History Channel, 1999.

History Channel's "Biography", 2004

Frontline (PBS)

Library of Congress

Thomas Jefferson's hair cuttings were taken on Jefferson's deathbed as keepsakes by his only surviving daughter, Martha Jefferson Randolph, and other family members. Three samples came to the Library of Congress in clearly identified envelopes with the papers of Jefferson. Martha wrote on one envelope: "My dear father Thomas Jefferson." The hair samples are cuttings without follicles and therefore are useless for DNA studies.