Series: 1 L (Volume 1)
Scope and Content Note: Original papers, 1771-1779, preceded by early deeds (1728, 1730) to family landholdings in Virginia and the will (1734) of Jonathan Clark, grandfather for whom the younger Jonathan was named. Nearly two dozen personal letters were written by the latter's father John and by his brothers George Rogers and John, Jr. Jonathan's military papers include pay and muster rolls for his company in the Eighth Virginia Regiment, his commissions as major and colonel signed by John Jay and Samuel Huntington, orders from his superior officers, and letters describing military operations in the East and West. Among his other correspondents were Abraham Bowman, Richard Campbell, William Croghan, William Darke, William Fontaine, Owen Gwathmey, Peter Helphenstine, James Higgin, Robert L. Hooper, Jr., Henry Lee (1756-1818), Thomas Marshall, Daniel Morgan, John Peter Gabriel Muhlenberg, John Page, Richard Peters, John Rogers, John B. Roy, Charles Scott John Steed, Lord Stirling (William Alexander), and William Woodford.

Series: 2 L (Volume 2)
Scope and Content Note: Additional original papers, 1780-1810. Family letters (about thirty pieces) written by John Clark and his four sons Jonathan, George Rogers, William, and Edmund compose about half of the volume. Four letters written in 1794 by William Clark give an account of his experiences as an officer under Anthony Wayne's command. Military documents include Jonathan's commission (1785) as major in the Virginia militia signed by Patrick Henry and Edmund's commission (1799), as captain the Seventh Regiment of United States Infantry signed by John Adams. Among other writers of letters and documents were Abraham and John Bowman, Arthur Campbell, William Croghan, William Darke, William Eustis, George Rogers Clark Floyd, Nathaniel Gist, Abraham Hite, Henry Lee, Jr., John Marshall, John Nevill, James O'Fallon, John Rogers, Charles Scott, and William Woodford.