Map of part of the Isthmus of Darien / by Dr. Cullen.Cullen, Dr1866]"To accompany Report of Rear Admiral C.H. Davis, U.S.N., ordered by Resolution of the Senate of the United States of March 19, 1866."IIncludes "Bird's eye view from the junction of the proposed canal with the Savana River to the Atlantic by Dr. Cullen."cartographic