From Francis Gibson, 1 December 1799
Carlisle 1st Decr. 99.
I beg leave to inform you that I am better of the Fever which I caught while at Fort Mifflin but am very much troubled with a Severe cough attended with Night Fevers and Sweats—from the exertions I am making for the recovery of my health I have reason to hope I shall Soon be able to return to my duty and you may rest assured that I shall not remain here one day after the State of my health will admit of my return to Fort Mifflin
I have the Honor to be with esteem your obedient Servant
Francis Gibson Lieut
2d. Regt. Artilerists & Engineers
(ALS, Hamilton Papers, Library of Congress).