ILLINOIS. 
If) 
DUPAGE CO I \ n . 
WHEATON QUADRANGLL' 
The following geographic positions were determined by primary 
traverse by E. L. McNair, topographer, in June, L905. The line 
starts at Lombard triangulation station of the United States Lake 
Survey, near Lombard, 111., and runs north to Itasca, on the Chicago, 
Milwaukee and St. Paul Railway; thence west along railwa} and 
highway to a point near the northwest corner of Dupage Count} ; 
thence south along Elgin, Joliet and Eastern Railway and highway 
to a point about 1.5 miles east of the southwest corner of Dupage 
County; thence easterly via highways to quarter corner between 
sees. 27 and 28, Downers Grove Township; thence north to point 
of beginning. 
Geographic positions from Lombard triangulation shit ion North to Chicago, Milwaukei 
and St. Paul Railway. 
Station. 
Latitude. 
Longitude. 
Lombard triangulation station, U. S. Lake Survey, in NW. \ sec. 4, 
York Township. Station mark: A stone post 3 feet below surface. 
Reference marks: Three stone posts, one N. 8° 52' W., distant L17.93 
meters; one N. 85° 11' E., distant 150.05 meters; and one at center 
of sec. 4, S. 13° 05' E., distant 575.32 meters 
Oil) 
41 54 07. CO 
41 54 17.fi 
41 55 10.3 
41 56 18. 1 
41 58 02.4 
41 58 16.2 
/ // 
87 .".'i l 29 
88 00 28 4 
T. 40 N., R. 11 E., quarter corner north side sec. 32, four corners east, 
88 00 29 5 
T. 40 N., R. 11 E., sec. 20, four corners 
88 nil U.8 
Itasca, 0.0(5 mile southeast of station, road corners east, west, and south. 
Itasca, 400 feet southeast of Chicago, Milwaukee and St. Paul Rwy. 
station, vertical face of west wing wall, north abutment of highway 
bridge over creek, 100 feet south of railway tracks, aluminum tablet 
88 00 11.0 
88 0(1 l" 8 
Geographic positions along Chicago, Milwaukee and St. Paul 
Railway, Itasca to Bartlett. 
Station. 
Latitude. 
Longitude. 
O 
41 
41 
41 
41 
41 
41 
41 
41 
58 31.2 
58 41.9 
59 00.2 
59 22. 4 
59 18. 6 
59 32.9 
59 41.0 
59 40.0 
O / // 
ss 02 11.1 
88 03 04. 1 
Roselle, center of south track opposite station 
Roselle, 1.75 miles west of station, road crossing 
88 04 35 5 
ss lie 34.9 
88 09 11.8 
ns 1 1 09. 2 
Bartlett, 0.6 mi-le west of station, road crossing 
Bartlett, 1.75 miles west of, on highway, four corners 
ns || 51.5 
88 13 03.8 
Geographic positions along Elgin, Joliet and Eastern Railway. 
Station. 
Latitude. Longitude. 
Road crossing near water tank 0.5 mile south of Chicago, Milwaukee 
o / >> 
41 59 38 8 88 14 11. 1 
Illinois Central R. R. crossing, 0.5 mile north of. road crossing 
Illinois Central R. R. crossing, in vortical face of south abutment of 
overhead bridge 10 feet south of Illinois Central track, in line with 
center of Elgin, Joliet and Eastern Rwy. track, aluminum tablet 
stamped " Prim. Trav. Sat. No. 2, 1905 " 
Chicago, Aurora and Elein Third Rail Electric bine 
Chicago, Aurora and Elgin Third Paii Electric bine, road crossing 0.75 
41 58 32. 7 88 ! 1 
41 58 05.0 88 i ! 12.4 
41 56 50.:: 88 M L3. 4 
41 56 (»''. 7 88 11 14. 
