note: … the command of Lieutenant G.S. Blake, U.S. Navy ; A.D

note: Includes facsimile signature at lower right: S

note: Scale [ca. 1:5,000,000] (W 125°--W 84°/N

note: … H.W. Halleck, U.S

note: Stamped: "U.S. Supt. of Documents."…

note: …. U.S.A. Commanding

note: …. Talcott, U.S. Engineers

note: Scale approximately 1:900,000 (W 93°17ʹ--W 84°59

note: … (W 77°33ʹ--W 77°23ʹ/N

note: … miles to 1 inch (W 93°00ʹ--W 86°50ʹ/N 47°10ʹ--N

note: …. S.W. Lamoreux

note: …, U.S.C.S.

note: … of O.H. Berryman, U.S

note: …, U.S.C.S.

note: … of Brev. Brig. Gen. W.S

note: … of Brev. Brig. Gen. W.S

note: drawn by And'w Ellicott.

note: … the direction of Bvt. Maj. W