United States. Surveyor General1 map ; 21 x 42 cmSenate Ex. Doc., No. 1, 1st Session, 34th Congress.JPEGG 3802 .D8P5 1855 .U500328804739015091903941engPublicMap of Dunkirk Harbor, N.Y. : showing the works erected by the United States and the plan of those projected for its further improvementMapsDunkirk HarborUniversity of Michigan