From the Mississippi Department of Archives and History Governor Pettus Collection. Letter from H. L. Clay at the Confederate War Department in Richmond, Virginia, to Mississippi Governor John J. Pettus, concerning mileage and per diem for impressment commissioners.

From the Mississippi Department of Archives and History Governor Pettus Collection. Letter from H. L. Clay at the Confederate Adjutant and Inspector General's Office concerning the operation of boards of appraisal for the Confederate government.