In 1865 during the Civil War, Lewis Blackford draws a very detailed map of the Island. This is by far the most accurate map of the period. By this time, the swamp north of the island open farmland has converted to fields by “land reclamation” and the distinctive shape of the island is almost lost. Interestingly, he cannot overcome all the past drawings with the floating round islands and actually draws one in the middle of the river because he cannot find an island in the river. He seems to be relying off the Fry and Chesney maps. He must have felt pensive about drawing it for he drew it lightly with green ink.