WESTERN DIVISION OF .TOPOGRAPHY. 
E. M. Douglas, Geographer in charge. 
ARIZONA. 
SECONDARY TRIANGULATION STATIONS. 
MARICOPA COUNTY. 
CAMELS BA< K, DESERT WELL, AND FORT M'DOWELL QUADRANGLES. 
In the winter of 1904-5 Mr. T. M. Bannon, topographer, occupied 
a number of three-point and secondary triangulation stations in order 
to obtain additional control for three 15-minute quadrangles in Mari- 
copa County. 
Positions are based upon Santan, Walker, Superstition, and Four 
Peaks; Maricopa astronomic datum. 
BUCHANANS TANK, MAEICOPA COUNTY. 
(Not occupied.) 
The galvanized water tank on the platform 10 feet south of the Desert 
Well. Twelve miles east of mesa on telephone road to Florence. 
Station mark: Center of tank. 
[Latitude 33°" 20' 56. 90". Longitude 111° 36' 38. 96". ] 
To station — 
Azimuth. 
Ba< 
•k azimuth. 
Log. distance. 
Number Four 
o / // 
O / tl 
Meters. 
3. 9339890 
Usery 
4. 2272149 
CORRECTION CORNER, MARICOPA AND PINAL COUNTIES. 
Correction corner on the base line between Tps. 1 N. and 1 S. and 
Ks. 7 and 8 E. of the Gila and Salt rivers meridian. This corner also 
marks an angle between Maricopa and Pinal counties. The station 
was located by the three-point method. 
[Latitude 33° 22' 39.19 // . Longitude 111° 35' 02.38".] 
To station — 
Azimuth. 
Back azimuth. 
Log. distance. 
Walker 
O / /' 
o / // 
Meters. 
4. 54'.. 1 L95 
Santan 
4. 4082288 
171 
