Levelling.
No, 4 in **E.Cab.14.3 United States. Board of Commissioners Appointed to Survey the Northeastern Boundary.
Profile with the spirit level of the due north line from the monu~ | ment at the source of the River St. Croix to the River St. John. | Surveyed in 1840 & 1841 under the direction of Major J. D. Gra- ham... Drawn by Wilson M. C. Fairfax.
[ Washington. 1843.] Size, 1254 X 295% inches. Scale: Hori- zontal, 1:200000 (or, 3.2 miles to I inch). Vertical, 1:10000 (or,’ 833% feet to 1 inch).
Cut from the report of the Board, House Executive Document No. 31, 37th Congress, 3d session [No. § in *4305.50; 4426.104; No, 31 in *C.420]. Two copies.
 
H2796 — Northeastern boundary of the United States. — Levelling. — Fairfax, Wilson M. C.