BAKER.] MAPS. 21 
Fifth. The foregoing four groups I have called preliminary maps. 
There is, however, a fifth group, a set of seven tracings, which have 
an official character which places them in a different category. These 
seven tracings, on tracing linen, are on a scale of 1 : 120000, are num- 
bered from west eastward, and each sheet includes 1° 20' of longitude 
and 30' of latitude, being 15' on each side of the forty-ninth parallel. 
Sheet 1, the westernmost, includes longitude 123° 10' to 121° 50'; 
sheet 2, 121° 50' to 120° 30', and so on; and sheet 7, the easternmost, 
115° 10' to 113° 50'. On these maps are shown trails, camps, caches, 
monuments, and names; the relief also is shown by red contour lines. 
Sheet 1 has the following legend: 
Tracings numbering from 1 to 7, showing the topography, names, and scales 
adopted by the British and United States Boundary Commissions for their final maps. 
By order of the commissioners. 
R. W. Haig, 
Capt'n R'l ArVy, Astr. British Commis'n. 
G. Clinton Gardner, 
Ass't Astr. and Surv., U. S. B. C. 
Washington City, May 30, 1863. 
Final drawings. — The final original manuscript maps resulting from 
the survey are thirteen in number. To this should be added the title 
page, making fourteen drawings. They are beautifully drawn on 
"smooth antiquarian" drawing paper, backed with muslin, and bound 
with blue braid. The sheets are of uniform size, being 30 inches high 
and 42 inches wide. They are kept among the treaty maps in the library 
of the Department of State. They are drawn wholly in black and show 
trails, timber, camps, monuments, etc. Topography is shown by 
hachures. The scale of the ten detailed maps is 1: 120000, or 1.89 miles 
to 1 inch: of the two general maps 1: 720000, or 11.37 miles to 1 inch, 
and of the index map 1: 1200000, or 18.94 miles to 1 inch. This series 
of drawings was obviously planned to form an atlas. Of this the con- 
tents would be: 
1. Title. 
2. Index map showing location of ten detailed sheets. l 
3. General map, eastern section. 
4. General map, western section. 
5. Detailed sheets numbered 1 to 7 (from east to west), showing land boundary. 
6. Detailed sheets numbered 8 to 10, showing water boundary. 
The title is as follows: 
Maps of the Boundary between the United States and the British" Possessions as 
established by the treaty of Washington, June 15, 1846. Surveyed under the direc- 
tion of the Joint Commission appointed to carry into effect the First Article of the 
Treaty. 
The index map is entitled: 
Index Map showing the limits of the detailed sheets of the U. S. North Western 
Boundary Survey. 
1 The plate which accompanies this bulletin is a copy, on a reduced scale, of this map. 
