Primary Sources: U.S. Presidents

"The papers of Thomas Jefferson (1743-1826), diplomat, architect, scientist, and third president of the United States, held in the Library of Congress Manuscript Division, consist of approximately 27,000 items, making it the largest collection of original Jefferson documents in the world. Dating from the early 1760s through his death in 1826, the Thomas Jefferson Papers consist mainly of his correspondence, but they also include his drafts of the Declaration of Independence, drafts of Virginia laws; his fragmentary autobiography; the small memorandum books he used to record his spending; the pages on which for many years he daily recorded the weather; many charts, lists, tables, and drawings recording his scientific and other observations; notes; maps; recipes; ciphers; locks of hair; wool samples; and more."

Access a selection of presidential papers online. Provided by Project Avalon at Yale.

"In this secret message of January 18, 1803, President Jefferson asked Congress for $2,500 to explore the West—-all the way to the Pacific Ocean. At the time, the territory did not belong to the United States. Congress agreed to fund the expedition that would be led by Meriwether Lewis and William Clark."

"On December 21, 1998, Dr. Daniel P. Jordan, president of the Thomas Jefferson Foundation, appointed a research committee of Monticello staff members, including four Ph.D.'s and one medical doctor, and charged the committee with evaluating the DNA study of Dr. Eugene Foster and associates, assessing it within the context of all other relevant historical and scientific evidence, and recommending the impact it should have on historical interpretation at Monticello."

Collections of the Massachusetts Historical Society contains a variety of letters, diaries and other papers relating to early America and the Revolution; mainly focused on New England colonies, but other colonies are also mentioned.