[Rough sketch showing the Mississippi River from its junction with the Ohio to a little below Memphis].
Title devised by cataloger. Pen-and-ink sketch with numerous notations on the east bank of the Mississippi. "Wolf Isld." and "Big Island" are named. Condition imperfect: Foxed, torn and missing small internal sections at fold lines, fragile (cut in center), mounted on cloth backing. Illegible writing on verso of map covered by cloth backing with cut to form a flap: Record of Lieut. Clark for…