RC (DNA: RG 59, LAR); endorsed by TJ as received 26 Jan. and “Doctr. Cozens to be librarian” and so recorded in SJL.

Ebenezer Elmer (1752–1843) of Cumberland County, New Jersey, was a founder of the Society of the Cincinnati and a veteran of both the Revolutionary War and War of 1812. Trained in medicine by his brother Jonathan Elmer, he was active in state and national politics, was first elected to the New Jersey assembly in 1789, and served as its speaker for three separate years. A Republican representative to the Seventh, Eighth, and Ninth Congresses, he was also appointed customs collector of Bridgeton, New Jersey, in 1808, and served as vice president of Burlington College (DAB description begins Allen Johnson and Dumas Malone, eds., Dictionary of American Biography, New York, 1928–36, 20 vols. description ends ; Biog. Dir. Cong. description begins Biographical Directory of the United States Congress, 1774–1989, Washington, D.C., 1989 description ends ).

Dr. Cozens: William R. Cozens, originally of New Jersey, studied medicine under Jonathan Elmer, was a member of the Philadelphia Medical Society, and received his degree in 1791 from the University of Pennsylvania (Cozens, An Inaugural Dissertation on the Chemical Properties of Atmospheric Air [Philadelphia, 1791; Evans, description begins Charles Evans, Clifford K. Shipton, and Roger P. Bristol, comps., American Bibliography: A Chronological Dictionary of All Books, Pamphlets and Periodical Publications Printed in the United States of America from … 1639 … to … 1820, Chicago and Worcester, Mass., 1903–59, 14 vols. description ends No. 23296]; David Stone to TJ, 26 Jan. 1802).