1Thomas Jefferson to Peter Jefferson Archer, 10 March 1818 (Jefferson Papers)
Your letter of Feb. 8. was long on the road & found me suffering under an attack of Rheumatism, which has but now left me at sufficient ease to attend to letters which have been recieved. these occasional infirmities, with the lethargising advance of years, render me dayly daily less and less qualified to pursue any continued object; and I have no doubt therefore that you have younger friends,...