Crucial to our nation’s history as author of the Declaration of Independence and third president, Thomas Jefferson was also a major figure in the Enlightenment, representing for Europeans the embodiment of the early nineteenth-century American mind. Since 1950, his writings have been compiled in the ongoing project The Papers of Thomas Jefferson and later The Papers of Thomas Jefferson: Retirement Series which began in 2001. Rotunda’s digital edition brings together all currently published volumes from both series in one searchable online resource, in addition to the "Second Series" volumes which includes material not included with the general correspondence, such as Jefferson's Memorandum Books.