From Callender Irvine, 1 May 1800
Carlisle May 1st. 1800
I am under the necessity of again, reporting myself unfit for duty.
I have the honor to be Sir, Your most Obedt. Servt.
Captn. 2d. Regmt. Arts. Engineers
Major Genl. Hamilton.
(ALS, Hamilton Papers, Library of Congress).