Secretary of the Navy under Lincoln and Johnson (1802–1878). DS, one page, 8 x 10, August 15, 1862. Welles grants a leave of absence to Commander David D. Porter, who was just assigned to command the Mississippi squadron and needs a leave of absence to organize his new position which began in October. Signed at the conclusion in black ink by Welles. In very good condition, with partial punch holes to left edge, a bit of light toning and overall light feathering to signature. R&R COA.
