Confederate general and accused spy (1801–1870) who was captured by Federal troops in 1861. Scarce franking signature, “Free Pierre Soule,” on an off-white 3.25 x 2 slip which is affixed to a slightly larger slip. Thin strip of toning through “Free,” toning to edges from adhesive, and some light wrinkling and creasing, otherwise fine condition. RR Auction COA.