Lincoln’s controversial first secretary of war. LS signed “Truly yours, Simon Cameron,” one page, lightly-lined, 5 x 8, March 23, 1861. Letter to a gentleman in Pennsylvania. In part, “I know not what may be the purpose in the State Dept. in regard to Dr. Heap. I fully appreciate what you say on the subject, and shall avail myself…to make known your views & the wishes of your friends on the subject.” Accompanied by the original free franked mailing envelope, franked in Cameron’s hand, “Simon Cameron,” in the upper right. In fine condition. R&R COA.