3471c50e__Thomas_Jefferson_s_Monticello__Access
[Resource] Memorandum Books [Description] If Jefferson employed or had financial transactions with the person or family you are researching, he may have noted it down in his Memorandum Books. [Access] 
The Memorandum Books are available through many bookstores and libraries; check WorldCat for availability in a library near you.
Researching Persons or Families | Thomas Jefferson's Monticello
Access