OREGON-SOUTH DAKOTA. 
[Latitude 42° 11' 48.57". Longitude 128° 09' 02.66". ] 
215 
To station- 
Red Butte . 
Grey back. . 
Kerby 
Grants Pass 
Sterling ... 
Azimuth. 
o / / 
5 13 12. 
77 
54 11 46. 
78 
96 01 43. 
19 
157 18 50. 
74 
312 13 07. 
02 
Back azimuth. 
185 11 54.17 
234 05 18.02 
275 49 14.39 
337 14 46. 82 
132 23 44. 75 
Log. distance. 
Meters. 
4. 4728695 
4. 2150949 
4.4100119 
4. 3430443 
4. 4705344 
TANNEN, JOSEPHINE COUNTY, OREO. 
A well-known bare peak very close to Oregon-California line. 
Reached by wagon road from Grants Pass to head of Williamson 
Creek, thence by trail past Greyback Mountain and along- summit of 
ridge to head of Sucker Creek, down Sucker Creek about 1 miles by 
trail to small creek. Trail goes up this creek 2 miles to meadow and 
good camping place. About 1.75 miles from here by trail to peak, 
which can be reached with animals. 
Signal: A cairn 7 feet high and small tree wired in center of same. 
Station mark: A bronze tablet cemented in solid rock under center 
of monument. 
[Latitude 42° 00 / 22.57 // . Longitude 123° 24 / 01.50".] 
To station- 
Kerby 
Greyback. 
Sterling . . 
Lake 
Red Butte 
Azimuth. 
O / II 
168 15 59. 69 
212 25 42. 
84 
268 06 38. 
55 
264 05 19. 
53 
295 00 02. 04 
Back azimuth. 
Log. distance. 
348 13 55. 02 
32 29 16.92 
88 27 16. 70 
84 09 20. 19 
115 08 44.67 
Meters. 
4. 3861224 
4.1364748 
4. 6292773 
3. 9200263 
4. 2981507 
SOUTH DAKOTA. 
SECONDARY TRIANGULATION STATIONS. 
BUTTE COUNTY. 
BELLE FOURGHE PROJECT. 
Early in the season of 1901- Mr. R. B. Robertson, field assistant, 
occupied three primary stations (Castle Rock, Owl Butte, and Susie 
Peak), thirteen secondary stations and located fifteen other points 
by intersections. Positions are given on the Rapid City astronomic 
datum. 
